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: – | |||||||||
T.I. Approvals:
Plus a wide range of approvals from most leading OEM’s across Aerospace, Medical, Industrial, and Oil and Gas markets.