ASTM A240 904L Stainless Steel round bar and 904L steel plate/sheet typical applications include tanks, valves, heat exchangers, flanges and manifolds. The addition of copper to the composition of
ASTM A240 904L aids its suitability for components such as tanks and other products used in handling sulphuric and phosphoric acid.
ASTM A240 904L chemical composition
|
Grade |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
N |
Cu |
|
A240 904L |
0.020 |
2.00 |
0.045 |
0.035 |
1.00 |
19.0-23.0 |
23.0-28.0 |
4.0-5.0 |
0.10 |
1.0-2.0 |
ASTM A240 904L mechanical properties
|
Grade |
Tensile strength, min Mpa |
Yield strength, min Mpa |
Elongation in 2 in % |
Hardness, max |
|
Brinell |
Rockwell B |
|
A240 904L |
490 |
220 |
35 |
- |
90 |
ASTM A240 904L Weldability
ASTM A240 904L alloy stainless steel is weldable but sensitive to hot cracking. Regarding welding ASTM A240 904L alloy stainless steel. ASTM A240 904L alloy stainless steel is important to follow special welding instructions from Avesta Welding.
ASTM A240 904L Formability
ASTM A240 904L alloy stainless steel can be both cold- and hot formed, but ASTM A240 904L alloy stainless steel can only be hardened by cold working. ASTM A240 904L alloy stainless steel is difficult to machine and has a tendency towards work hardening. With the right choice of tool and machine data, fully satisfactory machining results can be obtained with this grade.
