Product Description

1.Chemical composition :

Carbon	0.38 - 0.43
Chromium	0.7 - 0.9
Iron	Balance
Manganese	0.6 - 0.8
Molybdenum	0.2 - 0.3
Nickel	1.65 - 2
Phosphorus	0.035 max
Silicon	0.15 - 0.3
Sulphur	0.04 max

 

3.Dlivery condition: hot rolled, annealing ton ≤ HB269

 

4.Surface conditions : scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement

 

5. Mechanical Properites :

tensile strength σb (MPa)	min 980(100)
elongation δ5 (%)	min 12
reduction of areaψ (%)	min 55
impact absorbed energy Akv (J)	min 78
notched bar impact strength αkv(J/cm2)	min98(10)
yield point σs (MPa)	min835(85)

 

6. Applications: Used for manufacture big sized important Quenched-and-Tempered parts which request good toughness and high strength.such as top load shaft in heavy-duty machinery;

For steam turbine shaft, vane, and heavy-load transmission parts, fastening piece, crankshaft, gears etc. with diameter is biger than 250mm.

 

7.Physical Data

Density (lb / cu. in.)	0.28
Specific Gravity	7.8
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])	0.116
Melting Point (Deg F)	2600
Thermal Conductivity	21
Mean Coeff Thermal Expansion	6.6
Modulus of Elasticity Tension	33