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ASTM SA/A312 Stainless Steel Pipe Specifications
ASTM A 312 standard covers seamless steel pipe and straight-seam welded steel pipe manufactured for high-temperature and general corrosive service, it belongs to austenitic stainless steel family.
Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification.
Grade: 304/304L, 316/316L, 304H, 316H, 309, 310S, 317L, 321/321H, 347/347H, 904L, DUPLEX 2205 / SUPER DUPLEX 2507
Pipe ordered under this specification shall be suitable for bending, for flanging, for welding, and for similar forming operations. A full range of SA/A106 stock is available in Schedules 10 through 160, STD, XS, XXS. Unscheduled wall thicknesses available up to 4 inches.
Size Range: 1/2" - 24"
Schedules: 10S, STD, XH, 40, 80, 100, 120, 160, XXH
Length: Single random length/ Double random length or as customer's actual request.
ASTM A312 Steel Pipes Chemical Composition
|
ASTM A312 |
UNS |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
Ti |
Nb |
N |
|
TP304 |
S30400 |
0.08 |
2.0 |
0.045 |
0.030 |
1.0 |
18.0-20.0 |
8.0-11.0 |
|
|
|
|
|
TP304L |
S30403 |
0.035 |
2.0 |
0.045 |
0.030 |
1.0 |
18.0-20.0 |
8.0-13.0 |
|
|
|
|
|
TP304H |
S30409 |
0.04-0.10 |
2.0 |
0.045 |
0.030 |
1.0 |
18.0-20.0 |
8.0-11.0 |
|
|
|
|
|
TP304N |
S30451 |
0.08 |
2.0 |
0.045 |
0.030 |
1.0 |
18.0-20.0 |
8.0-18.0 |
|
|
|
0.10-0.16 |
|
TP304LN |
S30453 |
0.035 |
2.0 |
0.045 |
0.030 |
1.0 |
18.0-20.0 |
8.0-12.0 |
|
|
|
0.10-0.16 |
|
TP309S |
S30908 |
0.08 |
2.0 |
0.045 |
0.030 |
1.0 |
22.0-24.0 |
12.0-15.0 |
0.75 |
|
|
|
|
TP309H |
S30909 |
0.04-0.10 |
2.0 |
0.045 |
0.030 |
1.0 |
22.0-24.0 |
12.0-15.0 |
|
|
|
|
|
TP309Cb |
S30940 |
0.08 |
2.0 |
0.045 |
0.030 |
1.0 |
22.0-24.0 |
12.0-16.0 |
0.75 |
|
10xC min |
|
|
TP309HCb |
S30941 |
0.04-0.10 |
2.0 |
0.045 |
0.030 |
1.0 |
22.0-24.0 |
12.0-16.0 |
0.75 |
|
10xC min |
|
|
TP310S |
S3108 |
0.08 |
2.0 |
0.045 |
0.030 |
1.0 |
24.0-26.0 |
19.0-22.0 |
0.75 |
|
|
|
|
TP310H |
S3109 |
0.04-0.10 |
2.0 |
0.045 |
0.030 |
1.0 |
24.0-26.0 |
19.0-22.0 |
|
|
|
|
|
TP310Cb |
S31040 |
0.08 |
2.0 |
0.045 |
0.030 |
1.0 |
24.0-26.0 |
19.0-22.0 |
0.75 |
|
10xC min |
|
|
TP310HCb |
S31041 |
0.04-0.10 |
2.0 |
0.045 |
0.030 |
1.0 |
24.0-26.0 |
19.0-22.0 |
0.75 |
|
10xC min |
|
|
TP316 |
S3160 |
0.08 |
2.0 |
0.045 |
0.030 |
1.0 |
16.0-18.0 |
11.0-14.0 |
2.0-3.0 |
|
|
|
|
TP316L |
S31603 |
0.035 |
2.0 |
0.045 |
0.030 |
1.0 |
16.0-18.0 |
10.0-14.0 |
2.0-3.0 |
|
|
|
|
TP316H |
S31609 |
0.04-0.10 |
2.0 |
0.045 |
0.030 |
1.0 |
16.0-18.0 |
11.0-14.0 |
2.0-3.0 |
|
|
|
|
TP316Ti |
S31635 |
0.08 |
2.0 |
0.045 |
0.030 |
0.75 |
16.0-18.0 |
10.0-14.0 |
2.0-3.0 |
5x |
|
0.10 |
|
TP316N |
S31651 |
0.08 |
2.0 |
0.045 |
0.030 |
1.0 |
16.0-18.0 |
10.0-14.0 |
2.0-3.0 |
|
|
0.10-0.16 |
|
TP316LN |
S31653 |
0.035 |
2.0 |
0.045 |
0.030 |
1.0 |
16.0-18.0 |
11.0-14.0 |
2.0-3.0 |
|
|
0.10-0.16 |
|
TP317 |
S3170 |
0.08 |
2.0 |
0.045 |
0.030 |
1.0 |
18.0-20.0 |
10.0-14.0 |
3.0-4.0 |
|
|
|
|
TP317L |
S31703 |
0.035 |
2.0 |
0.045 |
0.030 |
1.0 |
18.0-20.0 |
11.0-15.0 |
3.0-4.0 |
|
|
|
|
TP321 |
S3210 |
0.08 |
2.0 |
0.045 |
0.030 |
1.0 |
17.0-19.0 |
9.0-12.0 |
|
|
|
0.10 |
|
TP321H |
S32109 |
0.04-0.10 |
2.0 |
0.045 |
0.030 |
1.0 |
17.0-19.0 |
9.0-12.0 |
|
|
|
0.10 |
|
TP347 |
S3470 |
0.08 |
2.0 |
0.045 |
0.030 |
1.0 |
17.0-19.0 |
9.0-13.0 |
|
|
|
|
|
TP347H |
S34709 |
0.04-0.10 |
2.0 |
0.045 |
0.030 |
1.0 |
17.0-19.0 |
9.0-13.0 |
|
|
|
|
|
TP347LN |
S34751 |
0.05-0.02 |
2.0 |
0.045 |
0.030 |
1.0 |
17.0-19.0 |
9.0-13.0 |
|
|
0.20- |
0.06-0.10 |
|
TP348 |
S3480 |
0.08 |
2.0 |
0.045 |
0.030 |
1.0 |
17.0-19.0 |
9.0-13.0 |
|
|
|
|
|
TP348H |
S34809 |
0.04-0.10 |
2.0 |
0.045 |
0.030 |
1.0 |
17.0-19.0 |
9.0-13.0 |
|
|
|
|
ASTM A312 Steel Pipes Mechanical Properties
|
SS Pipes Grade |
Tensile Strength |
Yield Strength |
Elongation |
|
TP304 |
515 |
205 |
35 |
|
TP304L |
485 |
170 |
35 |
|
TP316 |
515 |
205 |
35 |
|
TP316L |
485 |
170 |
35 |
|
TP321 |
OD < 17,1 mm – 515; |
OD < 17,1 mm – 205; |
35 |
|
OD > 17,1 mm – 485 |
OD > 17,1 mm – 170 |
ASTM A312 Steel Pipes Tolerance
ASTM A312 Diameter Tolerance
|
NPS |
ASTM A312/ASME SA312 OD Tolerance |
|||
|
+ |
– |
|||
|
inch |
mm |
inch |
mm |
|
|
1/8 to 1 1 /2 |
1/64(0.015) |
0.4 |
1/32(0.031) |
0.8 |
The nominal wall thickness tolerance is +/- 12.5%.
|
ASTM A312 Pipe |
NPS |
ASTM A312/ASME SA312 WT Tolerance, % |
|
|
+ |
– |
||
|
ASTM A312 |
1/8-2 1 /2 |
20.0 |
12.5 |
|
ASTM A312 |
3~18, t/D≤ 5% |
22.5 |
12.5 |
|
ASTM A312 |
3~18, t/D> 5% |
15.0 |
12.5 |
|
ASTM A312 |
≥ 20, welded |
17.5 |
12.5 |
|
ASTM A312 |
≥ 20, seamless, t/D≤ 5% |
22.5 |
12.5 |
|
ASTM A312 |
≥ 20, seamless, t/D> 5% |
15.0 |
12.5 |
