Guangzhou Changfeng Steel Co., LTD
| Payment Terms | T/T, L/C, D/P, Western Union |
| Supply Ability | 5000 tons / month |
| Delivery Time | within 15 working days |
| Packaging Details | Standard Export Packing or for Customers' Request |
| Heat Treatment | Annealed / Q+T |
| Delivery condition | Hot rolled or Forged |
| Test | SGS / UT 100% / Element testing |
| Surface | Black |
| Standard | AISI, ASTM, DIN, GB |
| Process | EAF+LF+VD+IC |
| Shape | Flat bar |
| Performance | High hardness and good machinability |
| Flaw detection | CC / DD/ EE |
| Our Service | CIF / FOB / EXW |
| Brand Name | CF Steel |
| Model Number | 1.7225, SCM440, SAE4140, 42CrMo |
| Certification | ISO / Mill Test Certificate |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | T/T, L/C, D/P, Western Union | Supply Ability | 5000 tons / month |
| Delivery Time | within 15 working days | Packaging Details | Standard Export Packing or for Customers' Request |
| Heat Treatment | Annealed / Q+T | Delivery condition | Hot rolled or Forged |
| Test | SGS / UT 100% / Element testing | Surface | Black |
| Standard | AISI, ASTM, DIN, GB | Process | EAF+LF+VD+IC |
| Shape | Flat bar | Performance | High hardness and good machinability |
| Flaw detection | CC / DD/ EE | Our Service | CIF / FOB / EXW |
| Brand Name | CF Steel | Model Number | 1.7225, SCM440, SAE4140, 42CrMo |
| Certification | ISO / Mill Test Certificate | Place of Origin | CHINA |
| High Light | alloy steel flat bar ，tool steel flat bar | ||
Hot Rolled Steel Flat Bar SCM440 4140 1.7225 42CrMo For Mechanical Gear Bolt Use
1. Chemical Composition (%)
| C | Si | Mn | Cr | Mo | P | S | Ni |
| 0.38~0.45 | 0.17~0.37 | 0.50-0.80 | 0.90~1.20 | 0.15-0.25 | ≤0.03 | ≤0.03 | ≤0.25 |
2. Application
It's application is as below:
A. The section of large forgings
B. Locomotive traction gears
C. The rear axle
D. The connecting rod
E. The spring load clip
F. Oil drill pipe joints
G. Fishing tools.
2. Features
1) Weldability suffers with increasing chromium content;
2) High temperature strength and high pressure hydrogenation properties are promoted by chromium and molybdenum;
3) Molybdenum significantly reduces temper brittleness;
4) Chromium renders steel oil hardenable and increase hardenability;
5) Chromium molybdenum high tensile steel with yield strength of 550N/mm2;
3. Mechanical Properties
Tensile strength:σb (MPa):≥1080(110)
Yield strength:σs (MPa):≥930(95)
Elongation:δ5 (%):≥12
Section shrinkage:ψ (%):≥45
Impact work:Akv (J):≥63
Impact toughness value:αkv (J/cm²):≥78(8)
4. Available Size
| Flat Bar (mm) | Round bar (mm) | |||
| Thickness | Width | Length | Diameter | Length |
| 12-280 | 2200 | 5800 | 16-450 | 3000-6000 |
5. Delivery state
A. Hot rolled or forged
B. Black surface
C. Q+T: hardness 28-34 HRC or Annealing:HBS<=235.
6. Delivery time
For abundant stock, 15-20 days.For customized products, 30-50 days.
We have full set of equipement (sawing machine/grinding/polishing machine) to make customer's specification.
7. Our service
8. Product picture
Warehouse
Processing
Strict Quality Control
Company Details
Business Type:
Distributor/Wholesaler,Exporter,Trading Company
Year Established:
2012
Total Annual:
5000000-10000000
Employee Number:
100~120
Ecer Certification：
Active Member
Guangzhou ChangFeng Steel Co., Ltd. is a professional special steel company, which specialized in exporting mould steel products based in China.With twenty years experience in special steel industry, our main products are Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Struct... Guangzhou ChangFeng Steel Co., Ltd. is a professional special steel company, which specialized in exporting mould steel products based in China.With twenty years experience in special steel industry, our main products are Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Struct...
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