Key Specifications/Special Features:
High nickel alloy round bars
Ravne no.: 883
Materials no.: 1.3247
DIN: S2-10-1-8
EN: HS2-9-1-8
AISI: M42
Chemical composition (in weight %)
C: 1.10%
Si: 0.70% Max.
Mn: 0.40% Max.
Cr: 4.00% Max.
Mo: 9.50%
V: 1.10%
W: 1.55%
Others: 8.00%
Description
Capable of very high hardness values, this is a moly type high speed tool steel. The alloy has excellent hot hardness and wear resistance and is commonly employed to machine difficult to machine materials including the super alloys.
Applications
Typically employed to machine the superalloys and exotic, M42 is employed in drills, hobs, taps, end mills, milling cutters, form and gear cutters, broaches and chasers.
Physical properties (average values) at ambient temperature
Density [g/cm3]: 8.01
Thermal conductivity [W/m.K]: 19.0
Soft annealing
Heat to 820-880oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 230-300.
Stress relieving
| C |
Mn |
Si |
P |
S |
Cr |
Ni |
Mo |
| 0.03 |
0.5 |
0.5 |
0.02 |
0.005 |
11.5~13.5 |
4.5~6.5 |
1.5~3.5 |
Mechanical behavior
State: hardening and tempering state. The supply status is typically 95 or 110 ksi, 0.2% yield strength
Extreme tensile strength: 115 ksi or more (792N / mm2)
0.2% Yield point: 110 ksi or more (758 N / mm2)
Elongation: 15%
V-notch impact strength (-10 ° C): 78 Joules (60ft-lbf)
Hardness: 33%
Audited Supplier 
){kind=link}
){kind=link}