Guangzhou Changfeng Steel Co., Ltd.
Guangdong, China
Diamond Member Since 2015 
Audited Supplier
Manufacturer/Factory, Trading Company
Sample Available
OEM/ODM Service
Factory Tour
1.7225 SCM440 SAE4140 Annealed or Prehardened Mechanical Alloy Tool Steel
| Purchase Qty.: (Tons) |
3-9 10+ |
|---|---|
| Reference FOB Unit Price: | US $840.00 US $825.00 |
| After-sales Service: | 24-hours |
|---|---|
| Warranty: | 15 days after receiving goods |
| Type: | Steel Plate |
| Standard: | ASTM, AISI, GB, JIS, DIN, BS |
| Certification: | ISO, RoHS |
| Surface Treatment: | Blackface |
Basic Info
Model NO.
1.7225, SAE4140, SCM440, EN19
Technique
Hot Rolled
Application
Mold & Dies
Special Use
High-strength Steel Plate, Wear Resistant Steel
Stock
Stock
Smelting Process
LF+VD+EAF
Shapes
flat bar/round bar/block
Technology
Hot Rolled/Forged/Clod Drawn
Surface Conditions
black/machined/peeled/bright
Heat Treatment
Annealing/Q+T
Quality Assurance
100% UT D/d, E/e passed
Delivery time
15-20days
Transport Package
Bundles/Wooden Cases
Specification
thickness: 20-280mm width: >=155mm, length: 5800mm
Trademark
CF STEEL
Origin
China
HS Code
7225401000
Production Capacity
1000t/Month
Product Description
1.7225 SCM440 SAE4140 Annealed or Prehardened Mechanical Alloy Tool Steel
1. Production Introduction
Equal Steel Grades:
42CrMo steel is an ultra-high strength steel with high strength and toughness, good hardenability, no obvious temper brittleness, high fatigue limit and multiple impact resistance after quenching and tempering, and good low temperature impact toughness.
2. Chemical Composition(%):
3. 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;
4. 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)
5. Recommend heat treatment:
6. Delivery state:
Hot rolled, Heat Treatment,black, hardness or tempered hardness:28-34 HRC.
Annealing:HBS<=235.
7. Applications:
It used for section large forgings, such as locomotive traction gears, with supercharger drive gear, the rear axle, the connecting rod and the spring load greatly clip,oil drill pipe joints and fishing tools,etc.
8. Available sizes:
9. Product pictures
1. Production Introduction
Equal Steel Grades:
| GB(China) | DIN(German) | AISI(USA) | JIS(Japan) |
| 42CrMo | 1.7225 | SAE4140 | SCM440 |
42CrMo steel is an ultra-high strength steel with high strength and toughness, good hardenability, no obvious temper brittleness, high fatigue limit and multiple impact resistance after quenching and tempering, and good low temperature impact toughness.
2. Chemical Composition(%):
| C | Si | Mn | Cr | P | S | Mo |
| 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.90-1.20 | ≤0.035 | ≤0.035 | 0.15-0.25 |
3. 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;
4. 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)
5. Recommend heat treatment:
| Quenching | Tempering | ||||
| Heating temperature/ºC | Cooling way | Hardness (HRC) | Tempering temperature/ºC | Hardness (HRC) | |
| Preheating temperature | Solution temperture | ||||
| 500-600 | 850-880 | Oil Cooling | 50-52 | 200 | ≥48 |
6. Delivery state:
Hot rolled, Heat Treatment,black, hardness or tempered hardness:28-34 HRC.
Annealing:HBS<=235.
7. Applications:
It used for section large forgings, such as locomotive traction gears, with supercharger drive gear, the rear axle, the connecting rod and the spring load greatly clip,oil drill pipe joints and fishing tools,etc.
8. Available sizes:
| Grade | Size(mm) | ||
| SCM440 Plate | Thickness | Width | Length |
| 20-280 | 2200 | 5800 | |
| SCM440 Round Bar | Diameter | Length | |
| 16-450 | 3000-6000 | ||
9. Product pictures
