ASTM A513 / ASME SA513 / Electric Resistance Welded Carbon and Alloy Steel Mechanical Tubing supplier & distributor in India

ASTM A513-88 / ASME SA 513

ELECTRIC RESISTANCE WELDED CARBON
AND ALLOY STEEL MECHANICALTUBING

1. SCOPE

1.1 This specification covers electric-resistance-welded carbon and alloy steel tubing for use as mechanical tubing.
1.2 This specification covers mechanical tubing made from hot- or cld-rolled steel.

1.3 This specification covers round, square, rectangular, and special shape tubing.

Type	Size Range(Round Tubing)
Electric-Resistance-Welded Tubing from Hot-Rolled Steel	outside diameter from 3/4 to 15 in.(19.0 to 38.1mm)
Electric-Resistance-Welded Tubing from Hot-Rolled Steel	wall from 0.065 to 0.650 in.(1.65 to 16.50mm)
Electric-Resistance-Welded Tubing from cold-Rolled Steel	outside diameter form 3/8 to 8 in.(9.52 to 203.2mm)
Electric-Resistance-Welded Tubing from cold-Rolled Steel	wall from 0.028 to 0.134 in.(0.71 to 3.40mm)

1.4 Optional supplementary requirements are provided and when desired, shall be so stated in inch-pound units
are to be refarded as the standard. 1.5 The values stated in inch-pund units are to be regarded as the standard.

Grade	Remaks (Similar to JIS)
MT 1010	(STKM11)
MT 1015	(STKM12)
MTX1015	-
MT 1020	(STKM13)
MTX1020	-
1008	-
1010	-
MTX1015	-
1016	-
1017	-
1018	-
1019	-
1020	-
1021	-
1022	-
1023	-
1024	-
1025	-
1026	(STKM14)
1027	-
1030	(STKM15)
1033	-
1035	-
1040	-
1050	-
1060	-
1340	-
1524	-
4778	-
4130	-
4140	-
5130	-
8620	-
8630	-

In such cases for Types 1 and 2 (A.W.H.R. and A.W.C.R.) the ovality may be 50% greater than the outside
tolerances but the mean outside diameter shall be within the specified tolerance.

For Types 3.4.5. and 6 (S.D.H.R., S.D.C.R., M.D., and S.S.I.D) the additional ovality shall be as follows
but the mean outside diameter shall be within the specified tolerances ;

Outside Diameter in (mm)	Additional Ovality Tolerance, in. (mm)
Up to 2 (50.8). incl	0.010 (0.25)
Over 2 to 3 (50.8 to 76.2). incl	0.015 (0.38)
Over 3 to 4 (76.2 to 101.6) incl	0.020 (0.51)
Over 4 to 5 (101.6 to 127.0) incl	0.025 (0.64)
Over 5 to 6 (127.0 to 152.4) incl	0.030 (0.76)
Over 6 to 7 (152.4 to 177.8) incl	0.035 (0.89)
Over 7 to 8 (177.8 to 203.2) incl	0.040 (1.02)
Over 8 to 9 (203.2 to 228.6) incl	0.045 (1.14)
Over 9 to 10 (228.6 to 254.0) incl	0.050 (1.27)
Over 10 to 11 (254.0 to 279.4) incl	0.055 (1.40)
Over 11 to 12 (279.4 to 304.8) incl	0.060 (1.52)
Over 12 to 13 (304.8 to 317.5) incl	0.065 (1.65)

condition The types and conditions of tubing covered by this specification are:

Type Number	Code Letters	Description
1	A.W.H.R	"as-welded" from hot-rolled steel
2	A.W.C.R	"as-welded" from cold-rolled steel
3	S.D.H.R	"sink-drawn" hot-rolled steel
4	S.D.C.R	"sink-drawn" cold-rolled steel
5	M.D	mandrel drawn
6	S.S.I.D	Special smooth inside diameter

Chemical Requirements for Standard Low-Carbon Steels A

Note - chemistry represents heat analysis. Product analysis, except for rimmed or capped steel,
is to be in accordance with usual practice as shown in Table 3.

Grade Designation	Composition, %
Grade Designation	Carbon	Maganese	Phosphorus. max	Sulfur. max
MT B 1010	0.05 - 0.15	0.30 - 0.60	0.035	0.035
MT 1015	0.10 - 0.20	0.30 - 0.60	0.035	0.035
MT X 1015	0.10 - 0.20	0.60 - 0.90	0.035	0.035
MT 1020	0.15 - 0.25	0.30 - 0.60	0.035	0.035
MT X 1020	0.15 - 0.25	0.70 - 1.00	0.035	0.035

A Rimmed or capped steels which may be used for the above grades are characterized by a lack of uiiformity
in their chemical composition, and for this reason produt analysis is not technologically appropriate unless
misapplication is clearly indicated.

B The letters MT under grade designation indicate Mechanical Tubing.
TABLE 2 Chemical Requirements for Other Carbon and Alloy Steels
Note-Chemistry represents heat analysis Product analysis, except for rimmed or capped steel,
is to be in accordance with usual practice as shown in Table 3.

Grade Designation	Composition. %
Grade Designation	Carbon	Manganese	Phosphorus. max	Sulfur, max	Silicon	...Nickel...	Chromium	Molybdenum
1008	0.10 max.	0.50 max	0.035	0.035	...	....	...	...
1010	0.08-0.13	0.30-0.60	0.035	0.035	...	...	...	...
1012	0.10-0.15	0.30-0.60	0.035	0.035	...	...	...	...
1015	0.12-0.18	0.30-0.60	0.035	0.035	...	...	...	...
1016	0.12-0.18	0.60-0.90	0.035	0.035	...	...	...	...
1017	0.14-0.20	0.30-0.60	0.035	0.035	...	...	...	...
1018	0.14-0.20	0.60-0.90	0.035	0.035	...	...	...	...
1019	0.14-0.20	0.70-1.00	0.035	0.035	...	...	...	...
1020	0.17-0.23	0.30-0.60	0.035	0.035	...	...	...	...
1021	0.17-0.23	0.60-0.90	0.035	0.035	...	...	...	...
1022	0.17-0.23	0.70-1.00	0.035	0.035	...	...	...	...
1023	0.19-0.25	0.30-0.60	0.035	0.035	...	...	...	...
1024	0.18-0.25	1.30-1.65	0.035	0.035	...	...	...	...
1025	0.22-0.28	0.30-0.60	0.035	0.035	...	...	...	...
1026	0.22-0.28	0.60-0.90	0.035	0.035	...	...	...	...
1027	0.22-0.28	1.20-1.55	0.035	0.035	...	...	...	...
1030	0.27-0.34	0.60-0.90	0.035	0.035	...	...	...	...
1033	0.29-0.36	0.70-1.00	0.035	0.035	...	...	...	...
1035	0.31-0.38	0.60-0.90	0.035	0.035	...	...	...	...
1040	0.36-0.44	0.60-0.90	0.040	0.050	...	...	...	...
1050	0.47-0.55	0.60-0.90	0.040	0.050	...	...	...	...
1060	0.55-0.66	0.60-0.90	0.040	0.050	...	...	...	...
1340	0.38-0.43	1.60-1.90	0.035	0.040	0.15-0.35	...	...	...
1524	0.18-0.25	1.35-1.65	0.040	0.050	...	...	...	...
4118	0.18-0.23	0.70-0.90	0.035	0.040	0.15-0.35	...	0.40-0.60	0.08-0.15
4130	0.28-0.33	0.40-0.60	0.035	0.040	0.15-0.35	...	0.80-1.10	0.15-0.25
4140	0.38-0.43	0.75-1.00	0.035	0.040	0.15-0.35	...	0.80-1.10	0.15-0.25
5130	0.23-0.33	0.70-0.90	0.035	0.040	0.15-0.35	...	0.80-1.10	...
8820	0.18-0.23	0.70-0.90	0.035	0.040	0.15-0.35	0.40-0.70	0.40-0.60	0.15-0.25
8630	0.28-0.33	0.70-0.90	0.035	0.040	0.15-0.35	0.40-0.70	0.40-0.60	0.15-0.25

TABLE 3 Tolerances for Product Analysis for Steels Shown in Table 1 and 2A

Element	Limit, or Maximum of Specified Range. %	Variation, Over the Maximum Limit or Under the Minimum Limit
Element	Limit, or Maximum of Specified Range. %	Under min, %	Over max. %
Carbon	to 0.15 incl	0.02	0.03
	over 0.15 to 0.40, incl	0.03	0.04
	over 0.40 to 0.55, incl	0.03	0.05
Manganese	to 0.60, incl	0.03	0.03
	over 0.60 to 1.15, incl	0.04	0.04
	over 1.15 to 1.65, incl	0.05	0.05
Phosphorus	...	...	0.01
Sulfur	...	...	0.01
Slicon	to 0.30, incl	0.02	0.03
	over 0.30 to 0.60	0.05	0.05
Copper	...	0.02	...
Nickel	to 1.00, incl	0.03	0.03
Chromium	to 0.90, incl	0.03	0.03
	over 0.90 to 210, incl	0.05	0.05
Molybdenum	to 0.20, incl	0.01	0.01
	over 0.20 to 0.40, incl	0.02	0.02

A Individual determinations may vary from the specified heat limits or ranges to the extent shown in this table,
except that any element in a heat may not vary both above and below a specified range.

TABLE 4 Diameter Tolerances for Type I (A.W.H.R.) Round Tubing

NOTE-Mesurements for diameter are to be taken at least 2 in.A from the ends of the tubes.

Outside Diameter Range. inA	Wall Thickness		Flash-in_TUbing B.C	Flash Controlled to 0.010 in max Tubing C.E	Flash Controlled to 0.005 in. max Tubing D.E
	BwgF	in.A	Outside Diameter. ±	Outside Diameter. ±	Outside Diameter. ±	Inside Diameter. ±
	BwgF	in.A	Tolerances. in. A, G
3/4 to 1 1/8, incl	16 to 10	0.065 to 0.134	0.0035	0.0035	0.0035	0.020
Over 1 1/8 to 2, incl	16 to 14	0.065 to 0.083	0.005	0.005	0.005	0.021
Over 1 1/8 to 2, incl	13 to 7	0.095 to 0.180	0.005	0.005	0.005	0.025
Over 1 1/8 to 2, incl	6 to 5	0.203 to 0.220	0.005	0.005	0.005	0.029
Over 1 1/8 to 2, incl	4 to 3	0.238 to 0.259	0.005	0.005	0.005	0.039

Over 2 to 2 1/2, incl	16 to 14	0.065 to 0.083	0.006	0.006	0.006	0.022
Over 2 to 2 1/2, incl	13 to 5	0.095 to 0.220	0.006	0.006	0.006	0.024
Over 2 to 2 1/2, incl	4 to 3	0.238 to 0.259	0.006	0.006	0.006	0.040
Over 2 1/2 to 3, incl	16 to 14	0.065 to 0.083	0.008	0.008	0.008	0.024
Over 2 1/2 to 3, incl	13 to 5	0.095 to 0.220	0.008	0.008	0.008	0.026
Over 2 1/2 to 3, incl	4 to 3	0.238 to 0.259	0.008	0.008	0.008	0.040
Over 2 1/2 to 3, incl	2 to 0.320	0.284 to 0.320	0.010	0.010	0.010	0.048

Over 3 to 3 1/2, incl	16 to 14	0.065 to 0.083	0.009	0.009	0.009	0.025
Over 3 to 3 1/2, incl	13 to 5	0.095 to 0.220	0.009	0.009	0.009	0.027
Over 3 to 3 1/2, incl	4 to 3	0.238 to 0.259	0.009	0.009	0.009	0.043
Over 3 to 3 1/2, incl	2 to 0.360	0.284 to 0.360	0.012	0.012	0.012	0.053

Over 3 to 4, incl	16 to 14	0.065 to 0.083	0.010	0.010	0.010	0.026
Over 3 to 4, incl	13 to 5	0.095 to 0.220	0.010	0.010	0.010	0.028
Over 3 to 4, incl	4 to 3	0.238 to 0.259	0.010	0.010	0.010	0.044
Over 3 to 4, incl	2 to 0.500	0.284 to 0.360	0.015	0.015	0.015	0.053

Over 4 to 5, incl	16 to 14	0.065 to 0.083	0.020	0.020	0.020	0.036
Over 4 to 5, incl	13 to 5	0.094 to 0.220	0.020	0.020	0.020	0.045
Over 4 to 5, incl	4 to 3	0.238 to 0.259	0.020	0.020	0.020	0.054
Over 4 to 5, incl	2 to 0.500	0.284 to 0.500	0.020	0.020	0.020	0.058

Over 5 to 6, incl	16 to 14	0.065 to 0.134	0.020	0.020	0.020	0.036
Over 5 to 6, incl	13 to 5	0.148 to 0.220	0.020	0.020	0.020	0.040
Over 5 to 6, incl	4 to 3	0.238 to 0.259	0.020	0.020	0.020	0.054
Over 5 to 6, incl	2 to 0.500	0.284 to 0.500	0.020	0.020	0.020	0.058

Over 6 to 8, incl	11 to 10	0.120 to 0.134	0.025	0.025	0.025	0.043
Over 6 to 8, incl	9 to 5	0.148 to 0.220	0.025	0.025	0.025	0.045
Over 6 to 8, incl	4 to 3	0.238 to 0.259	0.025	0.025	0.025	0.059
Over 6 to 8, incl	2 to 0.500	0.284 to 0.500	0.025	0.025	0.025	0.063

A 1 in. = 25.4 mm.

TABLE 5 Diameter Tolerances for Types 3,4,5, and 6 (S.D.H.R., S.D.C.R., M.D. and S.S.I.D) Round Tubing

Note - Measurements for diameter are to be taken at least 2 in. from the ends of the tubes.

OD Size RangeA	Wall % of OD	Types 3, 4, (Sink Drawn)A,B and 5,6, (Mandrel Drawn)B,B OD in.		Type 5 and 6 (Mandrel Drawn)B.C ID in.
OD Size RangeA	Wall % of OD	Over	Under	Over	Under
Up to 0.499	all	0.004	0.000	...	...
0.500 to 1.699	all	0.005	0.000	0.000	0.005
1.700 to 2.099	all	0.006	0.000	0.000	0.006
2.100 to 2.499	all	0.007	0.000	0.000	0.007
2.500 to 2.899	all	0.008	0.000	0.000	0.008
2.900 to 3.299	all	0.009	0.000	0.000	0.09
3.300 to 3.699	all	0.010	0.000	0.000	0.010
3.700 to 4.099	all	0.011	0.000	0.000	0.011
4.100 to 4.499	all	0.012	0.000	0.000	0.012
4.500 to 4.899	all	0.013	0.000	0.000	0.013
4.900 to 5.299	all	0.014	0.000	0.000	0.014
5.300 to 5.549	all	0.015	0.000	0.000	0.015
5.500 to 5.999	Under 6	0.010	0.010	0.010	0.010
	6 and over	0.009	0.009	0.009	0.009
6.000 to 6.499	under 6	0.013	0.013	0.013	0.013
	6 and over	0.010	0.010	0.010	0.010
6.500 to 6.999	under 6	0.015	0.015	0.015	0.015
	6 and over	0.012	0.012	0.012	0.012
7.000 to 7.499	under 6	0.018	0.018	0.018	0.018
	6 and over	0.013	0.013	0.013	0.013
7.500 to 7.999	under 6	0.020	0.020	0.020	0.020
	6 and over	0.015	0.015	0.015	0.015
8.000 to 8.499	under 6	0.023	0.023	0.023	0.023
	6 and over	0.016	0.016	0.016	0.016
8.500 to 8.999	under 6	0.025	0.025	0.025	0.025
	6 and over	0.017	0.017	0.017	0.017
9.000 to 9.499	under 6	0.028	0.028	0.028	0.028
	6 and over	0.019	0.019	0.019	0.019
9.500 to 9.999	under 6	0.030	0.030	0.030	0.030
	6 and over	0.020	0.020	0.020	0.020
10.000 to 10.999	all	0.034	0.034	0.034	0.034
11.000 to 11.999	all	0.035	0.035	0.035	0.035
12.000 to 12.999	all	0.036	0.036	0.036	0.036
13.000 to 13.999	all	0.037	0.037	0.037	0.037
14.000 to 14.999	all	0.038	0.038	0.038	0.038

A Tubing. flash controlled which is further processed without mandrel to obtain tolerances closer than those shown in
Tables 4 and 8.

B The ovality shall be within the above tolerances except when the wall thickness is less than 3 % of the outside diameter, in such cases see 8.6.2.

C Tubing produced to outside diameter and wall thickness. or inside diameter and wall thickness, or outside diameter and inside diameter, with mandrel to obtain tolerances closer than those shown in Tables 4 and 8 and no dimensional indication of inside diameter flash.

TABLE 6 Wall Thickness Tolerance for Type I (W.A.H.R) Round Tubing

Wall thickness		Outside Diameter, in. A
in.a	Bwg b	¾to 1, incl		Over 1 to 1 15/16,incl		Over 1 15/16to3 ¾, incl		Over3¾ to 4½,incl		Over 4½ to 6,incl		Over 6 to 8,incl
		Wall Thickness Tolerances, in., ±
		+	-	+	-	+	-	+	-	+	-	+	-
0.065	16	0.005	0.009	0.004	0.010	0.003	011	0.002	0.012	0.002	0.012
0.072	15	0.005	0.009	0.004	0.010	0.003	0.011	0.002	0.012	0.002	0.012
0.083	14	0.006	0.010	0.005	0.011	0.004	0.012	0.003	0.013	0.003	0.013
0.095	13	0.006	0.010	0.005	0.011	0.004	0.012	0.003	0.013	0.003	0.013
0.109	12	0.006	0.010	0.005	0.011	0.004	0.012	0.003	0.012	0.003	0.013	0.003	0.013
0.120	11	0.006	0.010	0.005	0.011	0.004	0.012	0.003	0.013	0.003	0.013	0.003	0.013
0.134	10	0.006	0.010	0.005	0.001	0.004	0.012	0.003	0.013	0.003	0.013	0.003	0.013
0.148	9			0.006	0.012	0.005	0.013	0.004	0.014	0.004	0.014	0.004	0.014
0.165	8			0.006	0.012	0.005	0.013	0.004	0.014	0.004	0.014	0.004	0.014
0.180	7			0.006	0.012	0.005	0.013	0.004	0.014	0.004	0.014	0.004	0.014
0.203	6					0.007	0.015	0.006	0.016	0.005	0.017	0.005	0.017
0.220	5					0.007	0.015	0.006	0.016	0.005	0.017	0.005	0.017
0.238	4					0.012	0.020	0.011	0.021	0.010	0.022	0.010	0.022
0.259	3					0.013	0.021	0.012	0.022	0.011	0.023	0.011	0.023
0.284	1					0.014	0.022	0.013	0.023	0.012	0.024	0.012	0.024
0.300	1					0.015	0.023	0.014	0.024	0.013	0.025	0.013	0.025
0.320						0.016	0.024	0.015	0.025	0.014	0.026	0.014	0.026
0.344						0.017	0.025	0.016	0.026	0.015	0.027	0.015	0.027
0.360						0.017	0.025	0.016	0.026	0.015	0.027	0.015	0.027
0.375								0.016	0.026	0.015	0.027	0.015	0.027
0.406								0.017	0.027	0.016	0.028	0.016	0.028
0.438								0.017	0.028	0.016	0.028	0.016	0.028
0.469										0.016	0.028	0.016	0.028
0.500										0.016	0.028	0.016	0.028

A 1in.=25.4mm. B Briminham wire Gage

TALBE 7 Wall Thickness Tolerances of Type 5 and 6 (M.D.and S.S.L.D.)Round Tubing

Wall Thickness		Outside Diameter,in. A
Wall Thickness		?to1?,incl		Over?to1?,incl		Over1?to3¾,incl		Over3¾to,incl
in. a	Bwg B	WAll Thickness Tolerances, in., A±
in. a	Bwg B	+	-	+	-	+	-	+	-
0.035	20	0.002	0.002	0.002	0.002	0.002	0.002
0.049	18	0.002	0.002	0.002	0.002	0.002	0.003
0.065	16	0.002	0.002	0.002	0.003	0.003	0.003	0.004	0.004
0.083	14	0.002	0.002	0.002	0.003	0.003	0.003	0.004	0.005
0.095	13	0.002	0.002	0.002	0.003	0.003	0.003	0.004	0.005
0.109	12	0.002	0.003	0.002	0.004	0.003	0.003	0.005	0.005
0.120	11	0.003	0.003	0.002	0.004	0.003	0.003	0.005	0.005
0.134	10			0.002	0.004	0.003	0.003	0.005	0.005
0.148	9			0.002	0.004	0.003	0.003	0.005	0.005
0.165	8			0.003	0.004	0.003	0.004	0.005	0.006
0.180	7			0.004	0.004	0.006	0.005	0.006	0.006
0.203	6			0.004	0.005	0.004	0.005	0.006	0.007
0.220	5			0.004	0.006	0.004	0.006	0.007	0.007
0.238	4			0.005	0.006	0.005	0.006	0.007	0.007
0.259	3			0.005	0.006	0.005	0.006	0.007	0.007
0.284	2			0.005	0.006	0.005	0.006	0.007	0.007
0.300	1			0.006	0.006	0.006	0.006	0.008	0.008
0.320				0.007	0.007	0.007	0.007	0.008	0.008
0.344				0.008	0.008	0.008	0.008	0.009	0.009
0.375						0.009	0.009	0.009	0.009
0.400						0.010	0.010	0.010	0.010
0.438						0.011	0.011	0.011	0.011
0.460						0.012	0.012	0.012	0.012
0.480						0.012	0.012	0.012	0.012
0.531						0.013	0.013	0.013	0.013
0.563						0.013	0.013	0.013	0.013
0.580						0.014	0.014	0.014	0.014
0.600						0.015	0.015	0.015	0.015
0.625						0.016	0.016	0.016	0.016
0.650						0.017	0.017	0.017	0.017

A 1in.=25.4mm. B Birmingham Wire Gage.

TABLE 8 Diameter Tolerances Type 2 (A.W.C.R) Round Tubing

Noto-Masurements for diameter are at least 2 in. from the ends of the tubes. A

Outsode Diameter Range, in. a	Wall Thickness		Flash-Tubing C	Flash Controlled to 0.010 in. max Tubing D	Flash Controlled B to 0.005 in. max Tubing
	Beg E	in. A	Outside Dimeter, ±	Outside Dimeter, ±	Outside Dimeter, ±	Outside Dimeter, ±
	Beg E	in. A	Tolerances, in. F
?to?, incl	22to16	0.028 to 0.065	0.003

Over?to?, incl	22to20	0.028 to 0.035	0.0035	0.0035	0.0035	0.013
Over?to?,incl	18	0.049	0.0035	0.0035	0.0035	0.015
Over?to?,incl	16to14	0.065 to 0.083	0.0035	0.0035	0.0035	0.019
Over¾to?,incl	13	0.095	0.0035	0.0035	0.0035	0.019
Over?to?,incl	12to11	0.109 to 0.120	0.0035	0.0035	0.0035	0.021

Over 1?to 2, incl	22to18	0.028 to 0.049	0.005	0.005	0.005	0.015
Over 1?to 2, incl	16to13	0.065 to 0.095	0.005	0.005	0.005	0.019
Over 1?to 2, incl	12to10	0.109 to 0.134	0.005	0.005	0.005	0.022

Over 2 to 2½,incl	20to18	0.035 to 0.49	0.006	0.006	0.006	0.016
Over 2 to 2½,incl	16to13	0.065 to 0.095	0.006	0.006	0.006	0.020
Over 2 to 2½,incl	12to10	0.109 to 0.134	0.006	0.006	0.006	0.023

Over2½ to 3, incl	20to18	0.035 to 0.049	0.008	0.008	0.008	0.018
Over2½ to 3, incl	16to13	0.065 to 0.049	0.008	0.008	0.008	0.022
Over2½ to 3, incl	12to10	0.109 tp 0.134	0.008	0.008	0.008	0.025

Over3 to 3½,incl	20to18	0.035 to 0.049	0.009	0.009	0.009	0.019
Over3 to 3½,incl	16to13	0.065 to 0.095	0.009	0.009	0.009	0.023
Over3 to 3½,incl	12to10	0.109 to 0.134	0.009	0.009	0.009	0.026

Over 3½ to 4, incl	20to18	0.35 to 0.049	0.010	0.010	0.010	0.020
Over 3½ to 4, incl	16to13	0.065 to 0.095	0.010	0.010	0.010	0.024
Over 3½ to 4, incl	12to10	0.109 to 0.134	0.010	0.010	0.010	0.027

Over 4 to 6,incl	16to13	0.065 to 0.095	0.020	0.020	0.020	0.034
Over 4 to 6,incl	12to10	0.109 to 0.134	0.020	0.020	0.020	0.037

Over 6 to 8,incl	14to13	0.083 to 0.095	0.025	0.025	0.025	0.039
Over 6 to 8,incl	12to10	0.109 tp 0.137	0.025	0.025	0.025	0.042

A 1in=25.4mm.

TALBE 9 Wall Thickness Tolerances for Type 2(A.W.C.R.)Round Tubing

Wall Thickness		Outside Diameter, in. A
Wall Thickness		?to?,incl		Over ?to1?, incl		Over 1?to 3¾, incl		Over 3¾to 5, incl		Over5to6, incl		Over 6 to 8, incl
in. A	BwgB	WAll Thickness Tolerance, in., A±
in. A	BwgB	+	-	+	-	+	-	+	-	+	-	+	-
0.028	22	0.001	0.005	0.001	0.005
0.035	20	0.002	0.005	0.001	0.005	0.001	0.005
0.049	18	0.003	0.006	0.002	0.006	0.002	0.006
0.065	16	0.005	0.007	0.004	0.007	0.004	0.007	0.004	0.007	0.004	0.007
0.083	14	0.006	0.007	0.005	0.007	0.004	0.007	0.004	0.007	0.004	0.0008	0.004	0.008
0.095	13	0.006	0.007	0.005	0.007	0.004	0.007	0.004	0.007	0.004	0.008	0.004	0.008
0.109	12			0.006	0.008	0.005	0.008	0.005	0.008	0.005	0.009	0.005	0.009
0.120	11			0.007	0.008	0.006	0.008	0.005	0.008	0.005	0.009	0.005	0.009
0.134	10			0.007	0.008	0.006	0.008	0.005	0.008	0.05	0.009	0.005	0.009

A 1 in.=256.4mm/ B Birenimgham Wire Gage.

TABLE 10 Cut-Length Tolerances for Lathe Round Tubing

Outside Diameter Size, in.A	6 in. and under 12 in.	12 in. and under 48 in	48 in. andunder 10 ft	10 ft to 24 ft incl B
3/8 tol 3 incl	±1/64 in.	±1/32 in.	±3/64 in.	±1/8 in.
Over 3 to 6, incl	±1/32 in.	±3/64 in.	±1/16 in.	± 1/8 in.
Over 6 to 9, incl	±1/16 in.	±1/16 in.	±1/8 in.	±1/8 in.
Over 9 to 12, incl	±3/32 in.	±3/32 in.	±1/8 in.	±1/8 in.

A 1 in.=25.4mm. B For each additional 10 ft or franction thereof over 24 ft,
an additional alowance should be made of plus orminus 1/16 in.

TAble 11 Tolerance (inch) for squarenesess of Cut (Either End ) When Specified for Round Tubing A.B

Length of Tube, ft C	Outside Diameter, in.D
Length of Tube, ft C	Under 1	1 to 2, incl	Over 2 to, incl	Over 3 to 4, incl	Over 4
Under	0.006	0.008	0.010	0.015	0.020
1 to 3, incl	0.008	0.010	.0015	0.020	0.030
Over 3 to 6, incl	0.010	0.015	0.020	0.025	0.040
Over 6 to 9, incl	0.015	0.020	0.025	0.030	0.040

A Actual aquareness normal to length of tube, not parallelness of both ends.
B Value given are "go" value of feeler gage. "no go" value is 0.001 in.
Greater in each case. C 1 ft=0.3m D 1 in.=25.4mm.

TABLE 12 Tolrances, Outside Dimensions A Square and Rectangular Tubing

Largest Nominal Outside Dimension, in. B	WAll Thickness, in. B	Outside Tolerance at all Sides at Comers ±in. B
3/16 to 5/8, incl	0.020 to 0.083, incl	0.004
Over 5/8 to 1 1/8 ,incl	0.025 to 0.156, incl	0.005
Over 1 1/8 to 1½, incl	0.025 to 0.192, incl	0.006
Over 1½ to 2,incl	0.032 to 0.192, incl	0.008
Over 2 to 3, incl	0.035 to 0.259, incl	0.010
Over 3 to 4, incl	0.049 to 0.259, incl	0.020
Over 4 to 5, incl	0.065 to 0.259, incl	0.020
ver 6 to 8,incl	0.185 to 0.259, incl	0.025

A Measured at corners at least 2 in. from the cut end of the tubing.
Convexity and concavity: Tubes having two parallel sides are also measured in the center of the flat sides for convxity.
This tolerance applies to the specific size determined st the comers, and is measured on the following basic:

Largest Nominal Outside Dimension, in.	Tolerance , ±in.
2½ and under	0.010
Over 2½ to 4	0.015
Over 4 to 8	0.025

B 1 in.=25.4 mm.

TABLE 13 Radii of Comers of Electric-Resistancce-Welded Square and Rectangular Tubing A

Squares and Rectangles Made From Tubes of the Follwing Diameter Ranges, in. B	Wall Thickness in Bwg and in. B	Radius Tolerances, in. C
½ to 1, incl	22(0.028)	1/32 to 1/16
½ to 2½, incl	20(0.035)	1/32 to 1/16
½ to 4, incl	18(0.049)	3/64 to 5/64
½ to 4?, incl	16(0.035)	1/16 to 7/64
¾ to 4?, incl	14(0.083)	5/64 to 1/8
Over 41/8 to 6, incl	14(0.083)	3/16 to 5/16
1 to 4?, incl	13(0.059)	3/32 to 5/32
Over 4? to 6, incl	13(0.095)	3/16 to 5/16
1¼ to 4, incl	12(0.109)	1/8 to 13/64
Over 4 to 6, incl	12(0.109)	3/16 to 5/16
1¼ to 4, incl	11(0.120)	1/8 to 7/32
Over 4 to 6, incl	11(0.120)	7/32to 7/16
2 to 4, incl	10(0.134)	5/32 to 9/32
Over a to 6,incl	10(0.134)	7/32 to 7/16
2 to 4, incl	9(0.148)	3/16 to 5/16
Over 4 to 8, incl	9(0.148)	7/32 to 7/16
2 To 8, incl	8(0.165)	1/4 to 1/2
2 to 8, incl	7(0.180)	1/4 to 1/2
2½ to 4, incl	6(0.203)	5/16 to 9/16
Over 4 to 8, incl	6(0.203)	5/16 to 9/16
2½ to 8,incl	5(0.220)	3/8 to 3/8
2½ to 8, incl	4(0.238) 3/8 to 5/8	3/8 to 5/8
2½ to 8, incl	3(0.259)	3/8 to 5/8

A This table eatablishes a stadard radius. The purchaser and producer may negotiate special radii.
Slight radius flattening is more promounced in heavier wall tubing. B 1 in.=25mm.
C These radius tolerances apply to grades of steel covered in Table 1.
The purchaser and producer may negotiate apply to grade of steel.

TALBE 14 Length Tolerances-Square and Rectangular Tubing

Lengths, ft A	Tolerances, in. B
1 to 3, incl	±1/16
Over 3 to 12, incl	±3/32
Over 12 to 20,incl	±1/8
Over 20 to 30, incl	±3/16
Over 30 to 40, inclOver 30 to 40, incl	±3/8

A 1 ft = 0.3 m. B 1 in.=25.4 mm.

TABLE 15 Twist Tolerances Electric-Resistance-Welded for Square and Rectangular-Mechanical Tubing

Largest Dimension, in. A	Twist Tolerance in 3 ft B, in.A
½ and under	0.032
Over ½ to 1½, incl	0.050
Over 1½ to 2½, incl	0.062
Over 2½ to 4, incl	0.075
Over 4 to 6,incl	0.087
Over 6 to 8, incl	0.100

A 1 in.=25.4 mm. B 1 ft =0.3 m.

TABLE 16 Minimum Inside Diameter Stock Allowance on Diameter A
for Removal of inside-Surface Imperfecions by Honing Operation (Mandrel-Drawn Tubing)

Outside Diameter, in. B	Wall Thickness, in. B
Outside Diameter, in. B	0.065 and under	Over 0.065 to 0.125 incl	Over 0.125 to 0.180, incl	Over 0.180 to 0.230, incl	Over 0.230 to 0.360, incl	Over 0.360 to 0.460, incl	Over 0.460 to 0.563, incl	Over 0.563
Up to and incl 1½	0.010	0.011	0.013	0.015	0.018
Over 1½ to 3,incl	0.010	0.012	0.014	0.016	0.018	0.021	0.023
Over 3 to 4 incl	0.011	0.013	0.015	0.017	0.019	0.021	0.023	0.025
Over 4 to 4¾incl		0.014	0.016	0.018	0.020	0.022	0.024	0.026
Over 4¾ to 6, incl		0.015	0.017	0.019	0.021	0.023	0.025	0.027
Over 6 to 8, incl		0.016	0.017	0.020	0.022	0.024	0.026	0.028
Over 8 to10½, incl				0.021	0.023	0.025	0.027	0.029
Over 10½ to 12½incl				0.022	0.024	0.026	0.028	0.030
Over 12½ to 14 incl				0.024	0.025	0.027	0.029	0.031
Over 14 to 15 incl				0.025	0.026	0.028	0.030	0.032

A If a specific size desired, these allowances plus nomal size tolerances must be considered in
calculationg size to be ordered.

B 1 in.=25.4 mm.

TABLE 17 Minimum Outside Diameter Stock Allowance on Diameter for Removel of
Outside-Surface Imprefections bym centerless Griding (Mandrel-Drawn Tubing)

Outside Diameter, in. B	Tubing Wall Thickness, in. B
Outside Diameter, in. B	Up to 0.125, incl	Over 0.125 to 0.180, incl	Ocer 0.180 to 0.230, incl	Over 0.230 to 0.360, incl	Over 0.360 to 0.460, incl	Over 0.460
Up to 3, incl	0.012	0.014	0.016	0.020	0.024	0.026
Over 3 too 4¾, incl	0.016	0.018	0.020	0.022	0.024	0.026
Over 4¾ to 6, incl	0.018	0.020	0.022	0.024	0.026	0.028
Over 6 to 7, incl	0.020	0.022	0.024	0.026	0.028	0.030
Over 7 to 8, incl			0.026	0.027	0.029	0.031
Over 8 to 10½,incl			0.027	0.028	0.030	.032
Over 10½ to 12½, incl			0.028	0.030	0.032	0.034
Over 12½ to 14 incl			0.03	0.032	0.034	0.036
Over 14			0.033	0.035	0.036	0.037

A If a specific size is desired, these allowance plus normal size tolerances must be
considered in calculating size to be order.

B 1 in. =25.4mm.

TABLE 18 Minimum Diameter Stock Allowance for Outside Diameter and
Inside Diameter for Removal of Imperfections by Machining (Mandrel-Drawn Tubing) A

Note-Camber-For Every foot or fraction tereof oner one foot of length, add 0.010 in. B for camber.

Outside Diameter, in. B	Wall Thickness, in. B
Outside Diameter, in. B	Up to 0.187	0.187 to 0.230 incl	Over 0.230 to 0.360, incl,	Over 0.360 to 0.460, incl	Over 0.460
Up to 1½ incl	0.015	0.020	0.025
Over 1½ to 3 incl	0.020	0.025	0.030	0.030	0.035
Over 3 to 4¾incl	0.025	0.030	0.035	0.035	0.040
Over 4¾ to 6 incl	0.030	0.035	0.040	0.040	0.045
Over6 to7 incl	0.035	0.040	0.045	0.045	0.050
Over 7 to 8 incl		0.045	0.048	0.048	0.053
Over 8 to 10 ½incl		0.048	0.050	0.050	0.055
Over 10 to½ 15 incl		0.050	0.055	0.055	0.060

A If a specific size desired, thise allowances plus nomal size tolerances must be considered
in claculationg size to be order.

B 1 in.=25.4 mm.

TABLE 19 Maximum Average Microinch Readings on Inside Surface (Special Smooth Inside Diameter Tubing)

Outside Diameter, in.A	Tubing Wall Thickness, in.A
Outside Diameter, in.A	0.065 and Under	Over 0.065 to 0.150, incl	Over 0.150 to 0.187, incl	Over 0.187 to 0.255, incl	0.255 to 0.312, incl
1 to 2½,incl	40	45	50	55	70
Over 2½ to 4½,incl	40	50	60	70	80
Over 4½ to 5½, incl		55	70	80	90
Over 5 ½to 7,incl		55	70	80	90

A 1 in.=25.4mm

TABLE 20 Allowance for Surface Imperfections on inside Diameters of Special Smooth Finish Tubes A

Outside Diameter Size, in .A	Wall Thickness, in. B	Wal Depth Allowance for Inside Diameter Surface Imperfections, in. B
Outside Diameter Size, in .A	Wall Thickness, in. B	Scores	Pits
Up to 2, incl½	0.065 to 0.109, incl	0.001	0.0015
	Over 0.109 to 0.250, incl	0.001	0.002
	Over 0.250 to 0.321, incl	0.001	0.0025
Over 2½to 5½, incl	0.083 to 0.125, incl	0.0015	0.0025
	Over 0..125 to 0.312, incl	0.0015	0.003
	Over 0.187 to 0.312, incl	0.002	0.004
Over 5 to ½7, incl	0.125 to 0.187, incl	0.0025	0.005
	Over 0.187 to 0.312, incl	0.003	0.006

A If a specific size is desired, These allowance plus normal size tolerances must be
considered calculating size be ordered.

B 1in. = 25.4mm.

TALBE 21 Hardness Limits and Tensile Properties for Round Tubing

Note 1- These values are on normal mill street relieving temperatures.
For particular applisations, properties may be ajusted by nagotiation between puechaser and producer.
Note 2-For longitudinal strip tets, the width of the gage section shall be 1 in.(25.4mm) and a deduction of
0.5 percentage points from the basic minimum elongation for each 1/32 in. (0.8mm) decrease in wall thickness
under 5/16 in. (7.9mm) in wall thickness shall permitted.

Yield Strength, kis (MPa), min		Ultimate Strength, kis (MPa), min	Elongation in 2 in. or 50mm, %, min	RB min	RBmax
As-Welded Tubing
1008	30(207)	50	15	50
1010	32(221)	45(310)	15	55
1015	35(241)	48(331)	15	58
1020	38(262)	52(359)	12	62
1021	40(276)	54(327)	12	62
1025	40(276)	56(386)	12	65
1026	45(310)	62(427)	12	68
1030	45(310)	65(427)	10	70
1035	50(345)	66(455)	10	75
1040	50(345)	66(645)	10	75
1340	55(379)	72(496)	10	80
1524	50(345)	66(455)	100	75
4130	55(379)	72(496)	10	80
4140	70(485)	90(621)	10	85
Normalized Tubing
1008	23(159)	38(262)	30		65
1010	25(172)	40(276)	30		65
1015	30(207)	45(310)	30		70
1020	35(241)	50(345)	25		75
1021	35(241)	50(345)	25		78
1025	37(255)	55(379)	25		80
1026	40(276)	60(414)	25		80
1030	40(276)	60(414)	25		85
1035	45(310)	65(448)	20		88
1040	45(310)	65(448)	20		90
1340	50(345)	70(483)	20		100
1524	45(310)	65(448)	20		88
4130	50(345)	70(483)	20		100
4140	65(448)	90(621)	20		105

TABLE 21 Continued

Yield Strength, kis(MPa), min		Ultimate Strength kis (MPa), min	Elongation in 2 in. or 50 mm, % min	RB min	RB max
Sink-Drawn Tubing
1008	38(262)	48(331)	8	65
1010	40(276)	50(345)	8	65
1015	45(310)	55(379)	8	67
1020	50(345)	60(414)	8	70
1021	52(359)	62(428)	7	70
1025	55(379)	65(448)	7	72
1026	55(379)	70(483)	7	72
1030	62(427)	70(483)	7	78
1035	70(483)	80(552)	7	82
Mandrel-Drawn Tubing
1008	50(345)	60(414)	5	73
1010	50(345)	60(414)	5	73
1015	55(379)	65(448)	5	77
1020	60(414)	70(483)	5	80
1021	65(427)	72(496)	5	80
1025	65(448)	75(517)	5	82
1026	70(483)	80(552)	5	85
1030	75(517)	85(586)	5	87
1035	80(552)	90(621)	5	90
1040	80(550)	90(621)	5	90
1340	85(586)	95(655)	5	90
1524	80(552)	90(621)	5	90
4130	85(586)	95(655)	5	90
4140	100 (690)	110(758)	5	90
Mandrel-Drawn Street-Relieved Tubing
1008	45(310)	55(379)	12	68
1010	45(310)	55(379)	12	68
1015	50(345)	60(414)	12	72
1020	55(379)	65(448)	10	75
1021	58(400)	68(469)	10	75
1025	60(414)	70(483)	10	77
1026	65(448)	75(517)	10	80
1030	70(483)	80(552)	10	81
1035	75(517)	85(586)	10	85
1040	75(517)	85(586)	10	85
1340	80(552)	90(621)	10	87
1524	75(517)	85(586)	10	85
4130	80(552)	90(621)	10	87
4140	95(655)	105(724)	10	90

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