Shanghai Bozhong Metal Group Co., Ltd.
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability | 1000TON/MONTH |
| Delivery Time | 3--10days |
| Packaging Details | seaworthy packing or as required |
| Description | Stainless Steel Round Bar |
| Grade | 1.7035 / 1.7045 / 41Cr4 / 42Gr4 / 5140 / SCr440 (H) / SCr440 |
| Standard | AISI, ASTM, DIN, EN, GB ,JIS |
| Dimension | Accept custom |
| MOQ | Different |
| Brand Name | Bozhong |
| Model Number | 1.7035 / 1.7045 / 41Cr4 / 42Gr4 / 5140 / SCr440 (H) / SCr440 |
| Certification | ISO / TUV / DNV |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram | Supply Ability | 1000TON/MONTH |
| Delivery Time | 3--10days | Packaging Details | seaworthy packing or as required |
| Description | Stainless Steel Round Bar | Grade | 1.7035 / 1.7045 / 41Cr4 / 42Gr4 / 5140 / SCr440 (H) / SCr440 |
| Standard | AISI, ASTM, DIN, EN, GB ,JIS | Dimension | Accept custom |
| MOQ | Different | Brand Name | Bozhong |
| Model Number | 1.7035 / 1.7045 / 41Cr4 / 42Gr4 / 5140 / SCr440 (H) / SCr440 | Certification | ISO / TUV / DNV |
| Place of Origin | China | ||
| High Light | round bar rod ，alloy steel rod | ||
The standard steel number of China's GB is 40Cr;
chemical composition
C: 0.37 ~ 0.44
Si: 0.17 ~ 0.37
Mn: 0.50 ~ 0.80
Cr: 0.80 ~ 1.10
Ni: ≤0.30
P: ≤0.035
S: ≤0.035
Cu: ≤0.030
Mo: ≤0.10
German DIN standard material number 1.7035 / 1.7045, German DIN standard steel number 41Cr4 / 42Gr4;
British EN standard steel number 18, British BS standard steel number 41Cr4;
French AFNOR standard steel number 42C4, French NF standard steel number 38Cr4 / 41Cr4;
Italy UNI standard steel number 41Cr4;
Belgium NBN standard steel number 42Cr4;
Swedish SS standard steel number 2245;
American AISI / SAE / ASTM standard steel number 5140;
Japanese JIS standard steel number SCr440 (H) / SCr440;
ISO Standard Steel Number 41Cr4.
【Critical point temperature】
(Approximate value) Ac3 = 780 ℃
【Normalizing Specification】
Temperature 850 ~ 870 ℃, hardness 179 ~ 229HBW.
【Specifications for softening cold pressed blanks】
The temperature is 740 ~ 760 ℃, the holding time is 4 ~ 6h, and then the cooling rate is 5 ~ 10 ℃ / h, and the temperature is reduced to ≤600 ℃.
Hardness before treatment ≤217HBW, hardness after softening ≤163HBW.
[Pig iron scrap protection swing tempering specification]
(670 ± 10) ℃ × 2h, increase with the furnace, (710 ± 10) ℃ × 2h, decrease with the furnace;
(670 ± 10) ℃ × 2h, heat up with the furnace, (710 ± 10) ℃ × 2h, then cool down with the furnace;
(670 ± 10) ℃ × 2h, heat up with the furnace, (710 ± 10) ℃ × 2h, cool down with the furnace;
A total of 3 cycles, and then reduce the temperature to 550 ℃, air cooling. The hardness after treatment is 153 HBW.
[Specifications for quenching and tempering]
Quenching temperature 850 ℃ ± 10 ℃, oil cooling; tempering temperature 520 ℃ ± 10 ℃, water, oil, air cooling.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Seller
Year Established:
1998
Total Annual:
45000000-50000000
Employee Number:
120~150
Ecer Certification：
Active Member
We have six subsidiaries located in Shanghai, Zhejiang, Jiangsu and Hongkong, which have built great relationship with the metal facilities abroad and at home, so as to provide excellent services for our clients. We have own entire system for pre-sale, in-sale and after-sale process. And our b... We have six subsidiaries located in Shanghai, Zhejiang, Jiangsu and Hongkong, which have built great relationship with the metal facilities abroad and at home, so as to provide excellent services for our clients. We have own entire system for pre-sale, in-sale and after-sale process. And our b...
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