What is ASTM A312 stainless steel round pipe?
ASTM A312 is a specification for seamless and welded austenitic stainless steel pipe that performs well in high temperature and corrosive environments.
What is the difference between 347 and 347H stainless steel pipes?
The carbon content of these grades does not exceed 0.08%, while the carbon content of 347H seamless stainless steel pipe ranges from 0.04% to 0.10%. Both contain 17.0% to 20.0% chromium, and no more than 2.0% manganese. They are made from 9.0% to 13.0% nickel.
Equivalent materials
|
China |
American |
Japanese |
German |
|
06Cr18Ni11Nb |
Grade 347 |
SUS 347 |
X6CrNiNb18-10, 1.4550 |
|
07Cr18Ni11Nb |
Grade 347H |
/ |
X7CrNiNb18-10, 1.4912 |
Stainless Steel 347/347H Electropolished Pipes Chemical Composition
|
Material |
C |
Mn |
Si |
Cr |
Ni |
P |
S |
Nb |
|
347 |
≤0.08 |
≤2.00 |
≤0.75 |
17.0~19.0 |
9.0~13.0 |
≤0.045 |
≤0.03 |
10C~1.00 |
|
347H |
0.04~0.10 |
≤2.00 |
≤0.75 |
17.0~19.0 |
9.0~13.0 |
≤0.045 |
≤0.03 |
8C~1.00 |
Stainless Steel 347 Pipe Physical Properties
|
Yield Strength, 0.2% Offset MPa |
Ultimate Tensile Strength, MPa |
Elongation in 2 in. or 51 mm |
Hardness, Max., |
|
205 |
515 |
40.0 |
217 |
SS 347/347H High Wall Thickness Pipe
Relevant standards: ASTM A312/A358
Size: 1/2"NB - 16"NB(seamless);1/2"NB - 24"NB (welded)
Length: 5.8 or random
Shape: round pipe, rectangle pipe, square pipe
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