Shanghai Jieteng Precision Mold Factory
Shanghai Jingteng Metal Group Co., Ltd.
Material Name
Material Name: 38CrMoAl
Execution standard: JIS G4053-2003
Characteristics and scope of application
Characteristic:
1,senior nitride with high azotizing performance, after nitriding treatment, can get high surface hardness, high fatigue strength and good resistance to heat
2, with good heat resistance and corrosion resistance
3, without temper brittleness, fair cutting performance
4, low cold bending plasticity, poor welding performance, low hardenability.
Application:
For the manufacture of high fatigue strength, high wear resistance, after heat treatment the size of the precision, high strength of various sizes of nitride parts.
Chemical Composition
| C | Si | Mn | S | P | Cr | Al | Ni | Cu | Mo |
|
0.35~0.42 |
0.2~0.45 | 0.30~0.60 | Below 0.035 |
Below 0.035 |
1.35~1.65 |
0.70~1.10 |
Below 0.25 | Below 0.30 | 0.15~0.25 |
Mechanical Property
|
Tensile strength σb (MPa) |
Yield Strength σs 0.2 (MPa) |
Elongation
δ 5 (％) |
reduction of crosssection area ψ (％) |
ballistic work Akv (J) |
pounding toughness value αkv (J/cm2) |
Hardness
(HB)
|
specimen size |
| Above 980 | Above 835 | Above 14 |
Above 50 |
Above 71 |
Above 88 |
Below 229 | 30mm |
specification of heat treatment and metallurgical structure
Specification of heat treatment : hardening 940℃ water cooling, oil cooling, tempering 640℃, water cooling, oil cooling.
Delivery State
Heat treatment (normalizing, annealing or high temperature tempering) or non heat treatment state of delivery, the delivery state should be indicated in the contract.
annealing No.1"760±10℃ furnace cooling to 400℃ air cooling.
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| Email: sales@sh-jieteng.com |
Old factory site: No.228 Sifeng Road, Songjiang district. ShanghaiShanghai office center : No. 655, High Tech Road, Songjiang District, Shanghai
Japanese warehousing and material control department: No. 38, Deborah Road ，Waigaoqiao Free Trade Zone，China (Shanghai) Free Trade Experimental Zone
Japan general office: Yamaguchi Prefecture light Chuo six 1-1-1, No. 19
Rp: enterprise operator: 86-021-57611748 fax 86-021-57612426 group's official website: www.sh-jieteng.com Shanghai ICP for: no. 1021431