　　The specification calls for the performance of a heat analysis on the products. The heat analysis is carried out on the Astm A36 Schedule 40 Steel Pipe in order to determine the required chemical composition.

　　The elements added in the alloy of ASTM A36 Pipe include manganese, carbon, phosphorus, silicon, sulfur, and copper. Along with a heat analysis, the ASTM A36 Seamless Pipe is evaluated using the tension test. Several parameters including the products tensile and yield strength besides its elongation properties are checked.

　　These properties must conform to the expected tensile properties. Being a structural grade, carbon steel ASTM A36 Water Pipe exhibit good weldability properties, and is easily weldable with the use of any of the following techniques - gas metal arc shielded metal arc welding i.e. SMAW, or stick welding, as well as oxyacetylene welding. The ASTM A36 Steel Pipe could be hardened or carburised using any of the conventional techniques used on alloy steel grade AISI 1018.

ASTM A36 Carbon Steel Seamless Pipe Pressure rating

Maximum Allowable Pressure (psi)
NPS	Outside Diameter	Schedule
(in)	(in)	10	20	30	STD	40	60	XS	80	100	120	140	160	XXS
1/4	0.54				7985	7985		10798	10798
3/8	0.675				6606	6606		9147	9147
1/2	0.84				6358	6358		8575	8575				10908	17150
3/4	1.05				5273	5273		7187	7187				10220	14373
1	1.315				4956	4956		6670	6670				9316	13340
1 1/4	1.66				4133	4133		5638	5638				7380	11276
1 1/2	1.9				3739	3739		5158	5158				7247	10316
2	2.375				3177	3177		4498	4498				7097	8995
2 1/2	2.875				3460	3460		4704	4704				6391	9408
3	3.5				3024	3024		4200	4200				6132	8400
3 1/2	4				2769	2769		3896	3896
4	4.5				2581	2581		3670	3670		4769		5782	7339
5	5.563				2273	2273		3303	3303		4404		5505	6606
6	6.625				2071	2071		3195	3195		4157		5318	6390
8	8.625		1420	1574	1829	1829	2307	2841	2841	3375	4085	4613	5147	4971
10	10.75		1140	1399	1664	1664	2279	2279	2708	3277	3847	4558	5128	4558
12	12.75		961	1268	1441	1560	2160	1922	2644	3244	3843	4324	5042	3843
14	14	875	1092	1313	1313	1533	2079	1750	2625	3283	3829	4375	4921
16	16	766	956	1148	1148	1531	2009	1531	2585	3157	3733	4404	4882
18	18	681	849	1192	1021	1530	2042	1361	2553	3147	3743	4252	4848
20	20	613	919	1225	919	1455	1989	1225	2526	3138	3675	4288	4824
22	22	557	835	1114	835		1949	1114	2506	3063	3619	4176	4733
24	24	510	766	1147	766	1405	1978	1021	2489	3126	3700	4210	4786
30	30	510	817	1021	613			817
32	32	478	766	957	574	1054
34	34	450	721	901	540	992
36	36	425	681	851	510	1021
42	42		583	729	438	875

Astm A36 Schedule 40 Steel Pipe Weight

Size NPS	Pipe O.D.	Wall Thickness	Pipe I.D.	Weight per Foot	Standard to XXHY	Schedule Pipe #	Section Modulus	Gallon Capacity Per Linear Foot
1/2	0.84	0.109	0.622	0.85	STD	40	.0407	.0158
		0.147	0.546	1.09	XHY	80	.0478	.0122
		0.188	0.464	1.31		160	.0528	.0088
		0.294	0.252	1.72	XXHY		.0577	.0026
3/4	1.05	0.113	0.824	1.13	STD	40	.0705	.0277
		0.154	0.742	1.48	XHY	80	.0853	.0225
		0.219	0.612	1.95		160	.1006	.0153
		0.308	0.434	2.44	XXHY		.1103	.0077
1	1.315	0.133	1.049	1.68	STD	40	.1328	.0449
		0.179	0.957	2.17	XHY	80	.1606	.0374
		0.250	0.815	2.85		160	.1904	.0271
		0.358	0.599	3.66	XXHY		.2136	.0146
1 1/4	1.66	0.140	1.380	2.27	STD	40	.2346	.0777
		0.191	1.278	3.00	XHY	80	.2913	.0666
		0.250	1.160	3.77		160	.3421	.0549
		0.382	0.896	5.22			.4110	.0328
1 1/2	1.90	0.145	1.610	2.72	STD	40	.3262	.1058
		0.200	1.500	3.63	XHY	80	.4118	.0918
		0.281	1.338	4.86		160	.5079	.0730
		0.400	1.100	6.41			.5977	.0494
2	2.375	0.109	2.157	2.64		10	.4205	.1898
		0.154	2.067	3.66	STD	40	.5606	.1743
		0.218	1.939	5.03	XHY	80	.7309	.1534
		0.250	1.875	5.68			.8045	.1434
		0.281	1.813	6.29			.8666	.1344
		0.344	1.687	7.47		160	.9806	.1161
		0.436	1.503	9.04	XXHY		1.1043	.0922
2 1/2	2.875	0.120	2.635	3.53		10	.6870	.2833
		0.203	2.469	5.80	STD.	40	1.0640	.2487
		0.216	2.443	6.14			1.1169	.2435
		0.250	2.375	7.02			1.2468	.2301
		0.276	2.323	7.67	XHY	80	1.3386	.2202
		0.375	2.125	10.02		160	1.6371	.1842
		0.552	1.771	13.71	XXXHY		1.9971	.1280
3	3.50	0.120	3.260	4.34			1.0411	.4336
		0.156	3.188	5.58			1.3122	.4147
		0.172	3.156	6.12			1.4265	.4064
		0.188	3.124	6.66			1.5342	.3984
		0.216	3.068	7.58	STD.	40	1.7241	.3840
		0.250	3.000	8.69			1.9372	.3672
		0.281	2.938	9.67			2.1207	.3521
		0.300	2.900	10.26	XHY	80	2.2253	.3431
		0.438	2.624	14.34		160	2.8774	.2811
		0.600	2.300	18.6	XXHY		3.4243	.2158
3 1/2	4.0	0.120	3.760	4.98		10	1.3776	.5768
		0.226	3.548	9.12	STD.	140	2.3939	.5136
		0.250	3.500	10.02			2.6001	.4998
		0.281	3.438	11.17			2.8562	.4821
		0.318	3.364	12.52	XHY	80	3.1400	.4617
		0.636	2..728	22.87	XXHY		4.8795	.3085
4	4.5	0.120	4.260	5.62		10	1.7612	.7404
		0.156	4.188	7.24			2.2354	.7156
		0.188	4.124	8.67			2.6296	.6942
		0.203	4.094	9.32			2.8173	.6838
		0.219	4.062	10.02			3.0184	.6725
		0.237	4.026	10.80	STD.	40	3.2145	.6613
		0.250	4.000	11.36			3.3611	.6528
		0.281	3.938	12.67		60	3.7021	.6326
		0.312	3.876	13.97			4.0273	.6126
		0.337	3.826	15.00	XHY	80	4.2713	.5972
		0.438	3.624	19.02		120	5.1790	.5361
		0.531	3.438	22.53		160	5.8997	.4822
		0.674	3.152	27.57	XXHY		6.7927	.4054
5	5.563	0.188	5.187	10.80			4.1161	1.0979
		0.219	5.125	12.51			4.7279	1.0716
		0.258	5.047	14.63	STD.	40	5.4500	1.0391
		0.281	5.001	15.87			5.8644	1.0204
		0.312	4.939	17.51			6.4074	.99647
		0.344	4.875	19.19			6.9358	.9696
		0.375	4.813	20.80	XHY	80	7.4300	.9449
		0.500	4.563	27.06		120	9.2534	.8495
		0.625	4.313	32.99		160	10.7976	.7590
		0.750	4.063	38.59	XXHY		12.0954	.6734
6	6.625	0.109	6.407	7.59		5	3.5769	1.6748
		0.134	6.357	9.30		10	4.3475	1.6488
		0.156	6.313	10.79			5.0107	1.6260
		0.188	6.249	12.94			5.9351	1.5937
		0.203	6.219	13.94			6.3804	1.5780
		0.219	6.187	15.00			6.8261	1.5620
		0.250	6.125	17.04			7.6905	1.5306
		0.280	6.065	18.99	STD.	40	8.4958	1.5008
		0.312	6.001	21.06			9.3416	1.4688
		0.344	5.937	23.10			10.111	1.4391
		0.375	5.875	25.05			10.893	1.4082
		0.432	5.761	28.60	XHY	80	12.224	1.3541
		0.500	5.625	32.74			13.711	1.2909
		0.562	5.501	36.43		120	14.9806	1.2346
		0.625	5.375	40.09			16.1821	1.1787
		0.719	5.187	45.39		160	17.8243	1.0977
		0.864	4.897	53.21	XXHY		20.025	.9784
		1.000	4.625	60.13			21.7719	.8727
		1.125	4.375	66.14			23.1237	.7809

ASTM A36 Pipe Chemical Formula

Standard	Grade	Process	Chemical Composition %
Standard	Grade	Process	C max	Mn*	P max	S max	Si min	Cr˟ max	Cu˟ max	Ni˟ max	Mo˟ max	V˟ max
ASTM A36	B	SMLS	0.30*	0.29-1.06	0.035	0.035	0.10	0.40	0.40	0.40	0.15	0.08

ASTM A36 Steel Pipe Mechanical Behaviour

		ASTM A36 Grade A	ASTM A36 Grade B	ASTM A36 Grade C
ASTM A36	Tenside strength, min, psi (MPa)	48000(330)	60000(415)	70000(485)
ASTM A36	Yield strength, min, psi (MPa)	30000(205)	35000(240)	40000(275)

　　ASTM A36 Round Carbon Steel Seamless Steel Pipe,Specification ASTM A36 covers carbon steel products including pipes, which can be used in the construction of bridges and buildings. The specified ASTM A36 Carbon Steel Seamless Pipe could also be used for customary structural purposes.

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