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ASTM A312 TP316L Stainless steel seamless pipe

Grade 316L is an austenitic stainless steel that can operate from 450 degrees Celsius to 850 degrees Celsius roughly. The range differs depending on the pressure of a system, the components flowing inside the pipe and the environment outside it. Marine environment is full of chloride ions and the wind and water are salty.

The salty conditions catalyze all forms of corrosions because they act as a medium for electron transfer for oxidation and reduction chemical reactions. The 316L stainless steel pipe has a lower carbon content than the ASTM A312 TP316 which means, there is less intergranular precipitation and local corrosion due to welding. Also, the material has molybdenum in addition to chromium and nickel which is specifically resistant to chloride ion stress corrosion.

316L Stainless Steel Pipe Specification

Standard Specification	ASTM A312 TP316L ASME SA312 TP316L
Veličina	½ to 6 Inch Nominal Bore
Schedule Pipe Thickness Range	Raspored 60, XS, Raspored 160, Raspored 120, STD, Raspored 40, Raspored 140, Raspored 20, Raspored 80, Raspored 80, Xxs, Raspored 30, Supplier in Mumbai
Debljina stijenke	0.1 – 60 mm
Length	Single Random Length 5 to 7 MeterDouble Random Length 10 – 12 Meter
Standard	IZ, ON, ASTM, GB, ASME, AISI, AMS, U, GOST
Types	Zavareni, Besprijekorno, AKR, EFW Supplier and Manufacturer
Manufacturing Shapes	Round, Box Section, Square, Rectangle
Surface Finish	Polished, Bright, Annealing, Cold Finish, Kiseljenje
Technique	Cold Rolled Hot Rolled
Manufacturing Technology	Hot Cold Formed

316L SS Seamless Pipe Equivalent Material

STANDARD	WERKSTOFF NR.	UNS	ON	BS	GOST	AFNOR	U
SS 316L	1.4404 / 1.4435	S31603	SUS 316L	316S11 / 316S13	03Ch17N14M3 / 03Ch17N14M2	Z3CND17-11-02 / Z3CND18-14-03	X2CrNiMo17-12-2 / X2CrNiMo18-14-3

Composition Standard of ASTM A312 TP 316L Pipe

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	Fe
SS 316L	0.035 max	2.0 max	1.0 max	0.045 max	0.030 max	16.00 – 18.00	2.00 – 3.00	10.00 – 14.00	68.89 min

Mechanical Properties of ASTM A312 TP 316L Stainless Steel Seamless Pipe

Grade	Tensile Strength(Mpa)	Yield Point(Mpa)	Elongation(%)
316L	485	170	35

Physical Properties of ASTM A312 TP 316L Stainless Steel Seamless Pipe

GRADE	DENSITY (KG/M3)	ELASTIC MODULUS (GPA)	MEAN CO-EFF OF THERMAL EXPANSION (ΜM/M/°C)			THERMAL CONDUCTIVITY (W/M.K)		SPECIFIC HEAT 0-100°C (J/KG.K)	ELEC RESISTIVITY (NΩ.M)
			0-100°C	0-315°C	0-538°C	AT 100°C	AT 500°C
316L/H	8000	193	15.9	16.2	17.5	16.3	21.5	500	74

ASTM A312 TP316L PIPE SIZE CHART

NPS	O.D. (in)	10	160	80	40
1/8″	.405	.049		.095	.068
1/4″	.540	.065		.119	.088
3/8″	.675	.065		.126	.091
1/2″	.840	.083	.187	.147	.109
3/4″	1.050	.083	.218	.154	.113
1″	1.315	.109	.250	.179	.133
1 1/4″	1.660	.109	.250	.191	.140
1 1/2″	1.900	.109	.281	.200	.145
2″	2.375	.109	.343	.218	.154
2 1/2″	2.875	.120	.375	.276	.203
3″	3.500	.120	.437	.300	.216
3 1/2″	4.000	.120		.318	.226
4″	4.500	.120	.531	.337	.237
4 1/2″	5.000
5″	5.563	.134	.625	.375	.258
6″	6.625	.134	.718	.432	.280
7″	7.625
8″	8.625	.148	.906	.500	.322
9″	9.625
10″	10.750	.165	1.125	.593	.365
11″	11.750
12″	12.750	.180	1.312	.687	.406
14″	14.000	.250	1.406	.750	.437
16″	16.000	.250	1.593	.843	.500
18″	18.000	.250	1.781	.937	.562

ASTM A312 Stainless Steel Pipe Tolerances

OD	Tolerance	WTH, mm	Length, mm
10.3 to 48.3	+0.40/-0.80	+/-12.5%t	+6/-0
over 48.3 to 114.3	+0.80/-0.08
over 114.3 to 219.1	+1.60/-0.80
over 219.1 to 457.2	+2.40/-0.80
over 457.2 to 660.4	+3.20/-0.80
over 660.4 to 864	+4.00/-0.08
over 864 to 1219.2	+4.80/-0.08

Wall Thickness tolerance of ASTM A312 TP316L

NPS	Wall Thickness Tolerance, %
1/8 To 2-1/2 Incl., All T/D Ratios	Over 20.2 Under 12.5
Over 3 To 18 Incl., T/D Up To 5% Incl.	Over 22.5 Under 12.5
Over 3 To 18, Incl., T/D > 5%	Over 15.0 Under 12.5
20 And Large, Zavareni, All T/D Ratios	Over 17.5 Under 12.5
20 And Large, Besprijekorno, T/D Up To 5% Incl.	Over 22.5 Under 12.5
>20 And Large, Besprijekorno, T/D > 5%	Over 15.0 Under 12.5

316l stainless steel pipe pressure rating

e Size (inča)	Pipe Schedule	Outside Diameter (in)	Wall Debljina (in)	Pressure Rating (psig)
				Temperatura (oF)
				100	200	300	400	500	600	650	700	750
				Allowable Stress (psi)
				16700	16700	16700	15500	14400	13500	13200	12900	12600
1″	40	1.315	0.133	2205	2205	2205	2047	1902	1783	1743	1703	1664
	80	1.315	0.179	3061	3061	3061	2841	2640	2475	2420	2365	2310
	160	1.315	0.250	4493	4493	4493	4170	3874	3632	3552	3471	3390
1 1/2″	40	1.900	0.145	1629	1629	1629	1512	1404	1317	1287	1258	1229
	80	1.900	0.200	2303	2303	2303	2138	1986	1862	1821	1779	1738
	160	1.900	0.281	3362	3362	3362	3120	2899	2717	2657	2597	2536
2″	40	2.375	0.154	1371	1371	1371	1272	1182	1108	1083	1059	1034
	80	2.375	0.218	1985	1985	1985	1843	1712	1605	1569	1534	1498
	160	2.375	0.344	3283	3283	3283	3047	2831	2654	2595	2536	2477
3″	40	3.500	0.216	1301	1301	1301	1208	1122	1052	1028	1005	982
	80	3.500	0.300	1844	1844	1844	1712	1590	1491	1458	1425	1391
	160	3.500	0.438	2787	2787	2787	2587	2403	2253	2203	2153	2103
4″	40	4.500	0.237	1102	1102	1102	1023	950	891	871	851	831
	80	4.500	0.337	1596	1596	1596	1482	1377	1291	1262	1233	1204
	160	4.500	0.531	2611	2611	2611	2424	2552	2111	2064	2017	1970
5″	40	5.563	0.258	965	965	965	896	832	780	763	746	728
	80	5.563	0.375	1428	1428	1428	1325	1231	1154	1129	1103	1077
	160	5.563	0.625	2474	2474	2474	2296	2133	2000	1955	1911	1866
6″	40	6.625	0.280	877	877	877	814	756	709	693	677	661
	80	6.625	0.432	1379	1379	1379	1280	1189	1115	1090	1065	1040
	160	6.625	0.719	2382	2382	2382	2211	2054	1925	1883	1840	1797
8″	40	8.625	0.322	771	771	771	716	665	623	610	596	582
	80	8.625	0.500	1218	1218	1218	1131	1050	985	963	941	919
	160	8.625	0.906	2298	2298	2298	2133	1982	1858	1817	1775	1734
10″	40	10.750	0.365	699	699	699	649	603	565	553	540	528
	80	10.750	0.594	1159	1159	1159	1075	999	937	916	895	874
	160	10.750	1.125	2289	2289	2289	2124	1974	1850	1809	1768	1727

ASTM A312 TP 316L Stainless Steel Pipe Roughness

Material Surface	Absolute Roughness Coefficient ε mm
Aluminum Alloy, Lead	0.001 – 0.002
Drawn Copper/ Brass	0.0015
316L Stainless Steel	0.015

Heat Treatment

ASTM A312 TP316L grade minimum solution temperature is 1040 degree, then and cool rapidly, it can not be harden by annealing, both seamless and welded stainless steel pipes shall be furnished in heat treatment condition comply to ASTM A312 specification.

316L Stainless Steel Seamless Pipes Applications

Trailers

Heat Exchangers

Food processing equipment

Kitchen benches, sinks, troughs, equipment and appliances

construction materials

Threaded fasteners

Chemical containers, including for transport

Automotive trim

Architectural applications

Railway cars

Woven or welded screens for mining, quarrying & water filtration

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