Product Description:
1. DIN1.7225/SAE4140/GB42CrMo, JIS SCM440 alloy steel round bar
2. Hot rolled condition, annealing or
harden, black or milled surface
3. Pre-heat treatment:
Annealing: Heat to 840-860 degree, keep 2H, furnace cold, hardness 217HBS MAX
High temperature tempering: Heat to 680-700 degree, air cold, hardness 217HBS MAX
4. Heat treatment:
Normalization: Heating to 840 to 880 degree, maintenance, furnace cooling to 600 degree, then in air.
Stress relieving: After rough heat to 500 degree, maintenance raff. In oven to 400 degree, then in air.
Hardening: Preheating from 600 to 650 degree, austenitizing At 840 to 880 degree, quenching in oil.
Tempering: Heating to 550 - 650 degree and maintenance regime, again depending on the mechanical Properties
5. Hot rolled technology: EAF+LF+VD
6. Ultrasonic test standard: SPE1921-GR3, CLASS C/C or D/D
7. Production leadtime: 7~10 days
Product Feature
Chemical component:
C 0.17-0.23
Mn 0.30-0.60
Si 0.15-0.40
Cr 1.25-1.75
Ni 3.25-3.75
Cu 0.25 MAX
P 0.030 max
S 0.030
Product Specification/Models
Hot rolled condition
16~255*2000~5800 mm
Application
General service industries (petroleum, food, chemical, paper, fertilizer, Fabric, aviation and nuclear)
Fluid, gas and oil transport
Pressure and heat transmission
Construction and ornament
Boiler heat exchangers
Other Information
we specializes in plastic mould steel, hot work mould steel, cold work mould steel alloy steel and carbon structural steel, such as : P20, P20+Ni, 1.2714, 1.2083, 1.2316, H13, O1, D2, D3, D5, 1045, 1050, A3, 52100(EN31), 4137, 4140, 4340, 5140, 6150, 8620 and SCM420
Company Contact:
Contact Name: Mr.jason Liu
Company Name: Dongguan Ruiyuan Steel Co., Ltd
Email:
Tel: +8618819098370
Fax: 86-0769-89026617
Street Address: 2nd Floor, Sihai
Commercial Building, Jinghai Road,
Chanan Town
Dongguan, Guangdong 523850
China
Website:
https://www.plasticmoldsteel.com
Member name: RuiYuanSteelExport
Country:
China
Member Since: 09 May 2013
Total Leads:
52 RuiYuanSteelExport Import Export Business Leads
Business focus: Steel Plate, Special Steel, Mould Steel, Die Steel, Carbon Steel, Alloy Steel, Hot Rolled Steel, Forging Steel, Tool Steel, Steel Round Bar, Plastic Mou
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