Stainless Steel Alloy 440A: forms, specifications and uses
Stainless Steel Alloy 440A (UNS S44002): Stainless Steel Grade 440A is a chromium martensitic stainless steel that combines superior wear resistance of high carbon alloys with the excellent corrosion resistance of chromium stainless steels. 440A is also magnetic in both the annealed and hardened conditions.
Stainless Steel product forms offered at all Titanium Industries locations include Stainless Steel Round Bar and Stainless Steel Hex Bar.
Typical uses of Stainless Steel Alloy 440A include cutlery, bearings, gage blocks, molds and dies, valve components, turbine components, medical instruments, aircraft structural parts, knives and measuring instruments.
For Stainless Steel Alloy 440A, request a quote online or contact your nearest Titanium Industries location. Alloy data on this page is for reference only, not for design.
Stainless Steel Grade 440A is a chromium martensitic stainless steel that combines superior wear resistance of high carbon alloys with the excellent corrosion resistance of chromium stainless steels. 440A is also magnetic in both the annealed and hardened conditions. Maximum corrosion resistance is attained only in the fully hardened condition.
Stainless Steel product forms offered at all Titanium Industries’ locations:
Stainless Steel Alloy 440A Applications:
- Cutlery
- Bearings
- Gage blocks
- Molds and dies
- Valve components
- Turbine components
- Medical instruments
- Aircraft structural parts
- Knives
- Measuring instruments
DISCLAIMER: Alloy data sheets are for reference only, not for design purposes.
| Chemical Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Fe Balance | Cr 16.0-18.0% | Mn 1.0% | Si 1.0% | Mo 0.75% | |||||
| C 0.60-0.75% | S 0.03% | P 0.04% | |||||||
| PHYSICAL PROPERTIES | ||||||
|---|---|---|---|---|---|---|
| Density (lb/ft3) | Electrical conductivity (% IACS) | Thermal conductivity (BTU/h-ft-°F) | Specific heat capacity (BTU/lb-°F) | Thermal expansion in/in/° F (µm/m•K | ||
| 0.28 | - | - | 0.11 | 10.2 | ||
| Mechanical Properties | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Property | Minimum | Maximum | |||||||
| Yield Strength Range (@strain 0.200 %) (MPa) | 415 | 1650 | |||||||
| Tensile Strength Range (MPa) | 725 | 1790 | |||||||
| Elongation (% in 50mm) | 5.0% | 20.0% | |||||||
| Brinell Hardness (B) | - | 95 | |||||||
| Modulus of Elasticity (GPa): 204 - 215 | |||||||||
| Machineability General Index: - | |||||||||
Stainless Steel Alloy 440A: questions and answers
What is Stainless Steel Alloy 440A?
What is Stainless Steel Alloy 440A?
Stainless Steel Grade 440A is a chromium martensitic stainless steel that combines superior wear resistance of high carbon alloys with the excellent corrosion resistance of chromium stainless steels. 440A is also magnetic in both the annealed and hardened conditions.
Which stainless steel product forms does Titanium Industries offer?
Which stainless steel product forms does Titanium Industries offer?
Stainless Steel Round Bar and Stainless Steel Hex Bar, at all Titanium Industries locations.
What is Stainless Steel Alloy 440A used for?
What is Stainless Steel Alloy 440A used for?
Cutlery, bearings, gage blocks, molds and dies, valve components, turbine components, medical instruments, aircraft structural parts, knives and measuring instruments.