Stainless steel
AISI 440A
1.4109
In hardened condition, this metal has an exceptional wear resistance.
Key benefits
Well used for ball bearings
Medical instruments, dentals
Normes
ASTM F899
Available forms in stock
Diameter
- 2 to 50 mm
Length
- 3000 mm around
Chemical composition
Reference standard : ASTM F899
C
- 0,6% min
- 0,75% max
Si
- 0% min
- 1% max
Mn
- 0% min
- 1% max
P
- 0% min
- 0,04% max
S
- 0% min
- 0,03% max
Cr
- 16,00% min
- 18,00% max
Mo
- 0% min
- 0,75% max
Cu
- 0% min
- 0,5% max
Fe
- —
- Balance
Back
Mechanical properties
Rm (Mpa) (according to diameter)
750 - 900
Rp 0,2 (Mpa)
420
Density (g/cm3)
7,75
A (%)
20
