AISI 431 grade.
This stainless corrosion-resistant steel is designed for heavy-duty high-strength parts used for abrasion and impact loads in mildly aggressive environments. It is used in chemical industry, electrical engineering, automotive industry and has high strength, durability, corrosion resistance.
Percentage composition
| Mn |
Si |
C |
P |
S |
Ni |
Cr |
|---|
| up to 0.8 |
up to 0.8 |
0.17 - 0.25 |
up to 0.035 |
up to 0.025 |
1.5 - 2.5 |
16 - 18 |
Mechanical characteristics of AISI 431 steel at 20 °C
| Range |
mm |
- |
MPa |
MPa |
% |
% |
kJ/m2 |
- |
|---|
| - |
Size |
e.g. |
s in |
sT |
d5 |
y |
KCU |
Heat treatment. |
| Forgings |
|
|
813 |
666 |
12 |
30 |
500 |
|
| AISI 431 alloy condition |
Yield strength (MPa) |
Tensile strength |
Elongation at break |
|---|
| 20°С |
100°С |
200°С |
300°С |
| Annealed |
520 |
495 |
460 |
| ¼ hard |
1000 |
1570 MPa |
3% |
| Hardened |
≤1200 |
1400 MPa |
6% |
Marking of physical properties:
| Description |
Designation |
|---|
| - Alloy data acquisition temperature [degrees] |
- T |
| - Modulus of elasticity of the 1st kind, [MPa] |
- E |
| - Coefficient of thermal linear expansion (at 20°C), [1/Grad] |
-a |
| - Specific electrical resistance [Ohm-m] -R |
-R |
| - Specific gravity [g/cm3] -r |
-r |
| - Heat transfer coefficient [W/(m-grad)] -l |
-l |
| - Specific heat capacity (at 20°C), [J/(kg-grad) |
-C |
| Marking of mechanical properties: |
| - Limit of proportionality (yield strength for permanent deformation) [MPa] |
sT |
| - Short-time strength [MPa] |
sT |
| - Ratio constriction [ % ] |
y |
| - Tensile elongation [ % ] |
d5 |
| - Brinell hardness, in [MPa] |
HB |
| - Impact toughness [kJ/m2] |
KCU |
Weldability:
| Designation |
Description |
|---|
| limited weldable |
- Must be preheated to 100-120°C with subsequent heat treatment |
| no restrictions |
- No need for preheating and final heat treatment |
| Difficult to weld |
- need preheating to 200-300 ° C with the final heat treatment |
Buy at best price
Evek GmbH stocks a wide range of AISI 431 steel products. Our representative offices are located. You can make a purchase without leaving your office, through the Company's website. The popularity of products of AISI 431 brand is explained by a variety of assortment and low cost. All products are of the highest quality. Technological completeness of each stage of production makes it possible for us to fulfill individual orders in case you are not satisfied with the basic execution of the product. We carry out high quality individual orders of non-standard parameters, the timing of their implementation is minimal. Wholesale customers are offered discounts.
