Alloy Steel Plate Sae4140 42crmo Din1 7225 - Chinaprice: contact company for price
1.1.7225/SAE4140/GB42CrMo, JIS SCM440 alloy steel plate
2.Hot rolled or forged condition, annealing or harden, black or milled surface
Annealing : heat to 840-860°c, keep 2H, furnace cold, hardness≤217HBS
High temperature tempering : heat to 680-700°c, air cold, hardness ≤217HBS
Normalization: heating to 840 to 880 ° C, maintenance, furnace cooling to 600 ° C, then in air.
Stress relieving: after rough heat to 500 ° C, maintenance raff. In oven to 400 ° C, then in air.
Hardening: preheating from 600 to 650 ° C austenitizing
at 840 to 880 ° C, quenching in oil.
Tempering: heating to 550 - 650 ° C and maintenance regime, again depending on the mechanical properties
5. Hot rolled technology:EAF+LF+VD
Forged technology: EAF+LF+VD+ESR+Forging +Q T + Machined surface
6.Ultrasonic test standard: SPE1921-GR3, CLASS C/C or D/D
7.Production leadtime: 7~10 days
General service industries (petroleum, food, hemical, paper, ertilizer, Fabric, aviation and nuclear)
Fluid, gas and oil transport
Pressure and heat transmission
Construction and ornament
Boiler heat exchangers
Good purity and homogeneity.
Good machinability(Roughing, grinding and drilling).
Good dimensional stability during heat treatment.
Excellent preparation for nitriding, both ionic and gaseous, induction hardening to increase the mechanical properties.
Fast production leadtime
All the material are inspected with 3 times to meet the highly standards
- Posted By: Dongguan Ruiyuan Steel Co., Ltd.
- Phone: 8676989878426
- Address: 2nd Floor, Shihai Commercial Building, Jinghai Roa, Guangzhou, China
Published date: November 30, 2013 -
- Business Description: involved in international trade import export of goods, products, and services
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