The alloy structural steels are provided with higher yield strength, tensile strength, endurance strength, yield ratio (about 0.85 generally ) enough plasticity and toughness.

The concentration of alloy element of this kind of steel is quite high, mainly are corrosion resistant steel, heat resistant steel, wear resistant steel, and other special steels of physical and chemical properties. Alloy structural steel has preferable mechanical property than that of carbon structural steel, high performance of heat treatment especially.

Application

The alloy structural steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on.

All Grades Comparison

DIN1.6932 

EN 28NiCrMoV8-5

Quality Standard

EN 10250 Open steel die forgings for general engineering purposes. Alloy special steels

HEAT TREATMENT:

Hardening Temperature:830oC-870oC

Tempering Temperature:550oC-850oC

Forging:

Hot forming temperature: 1050-850oC.

Mill′s test certificate:

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.