Alloy structure steel plate
40Cr Steel plate
Applications: For various alloys structural components and their
components, such as power station boiler Superheater collection
box, large diameter tube plate structure
Quick Details:
Standard: GB3077, GB11251, EN10083-1
Grade: 40Cr
Place of Origin: Henan China (Mainland)
Brand Name: wghongxing
Type: Steel plate Surface treatment
Packaging & Delivery:
Packaging detail: Bundle, loose and bare or according customer
inquire
Delivery detail: Depend on the customer inquire
Specifications:
Hot Rolled Steel Plate 40Cr
1 Grade: 40Cr
2 T: 6-700mm; Length: 3000-12000mm; W: 1500-4000mm;
3 Delivery time: Average Period in 30 days
| components | C | Si | Mn | P
≤ | S
≤ | Mo | Nb | V | TAl | Cr |
| 0.19-0.23 | 0.20-0.35 | 0.55-0.75 | 0.020 | 0.012 | 0.020 | | | 0.020-0.040 | 0.70-0.85 |
| Use | For various alloys structural components and their components, such
as power station boiler Superheater collection box, large diameter
tube plate structure |
| size | 3000-118800mm*1500-4000mm*6-700mm |
| Thickness | 6-700mm |
| Standard | GB3077 |
| Material | 40Cr |
| Packing | According to the demand of the customer inquire |
| Surface treatment | Hot-rolled |
| Delivery time | According to the quantity; asap, average period in 30 days. |
40Cr Steel Chemical Composition
| Chemical Composition (%) |
| Grade | C % | Si | Mn | Cr |
| 40Cr | 0.37 – 0.44 | 0.17 – 0.37 | 0.5 – 0.8 | 0.80 – 1.10 |
Mechanical Properties of 40Cr Alloy Steel
- Tensile strength: ≥810 N/mm2 (When actual hardness 25 HRC)
- Yield strength: ≥785 N/mm2
- Elongation after break: ≥9%
- Rate of reduction in area: ≥45%
- Impact absorbing energy: ≥47 J
- Material Brinell hardness: ≤207 (annealing or high temperature
tempering state)
- Sample size: 25mm
Heat treatment specification
- First quenching heating temperature: 850 °C (Cooling: oil)
- Tempering heating temperature: 520 °C
Equivalent grades of 40Cr Material
40Cr steel equivalent to US ASTM AISI, European Germany DIN EN,
British BS EN, France NF EN, Japanese JIS and ISO standard.
| Equivalent (For reference) |
| China | USA | Germany | Japan | France | UK | ISO |
| Standard | Grade | Standard | Grade | Standard | Grade (Steel number) | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade |
| GB/T 3077 | 40Cr | AISI or
ASTM A29/A29M | 5140 | DIN EN 10083-3 | 41Cr4 (1.7035) | JIS G4104 | SCr440 | NF EN 10083-3 | 41Cr4 (1.7035) | BS EN 10083-3 | 41Cr4 (1.7035) | ISO 683-1 | 41Cr4 |
Applications of 40Cr material
After 40Cr alloy steel quenching and tempering treatment, it is used to manufacture medium-speed, medium-load parts
such as machine gears, shafts, worms, spline shafts, thimble
sleeves, etc.
After quenching and tempering and high-frequency surface quenching,
it is used to manufacture high-hardness, wear-resistant parts such
as gears, shafts, spindles, crankshafts, sleeves, pins, connecting
rods, screws, nuts, intake valves, etc.
After quenching and medium temperature tempering, it is used to
manufacture heavy-duty, medium-speed impact parts such as oil pump
rotors, sliders, gears, spindles, collars, etc.
After quenching and low temperature tempering, it is used to
manufacture heavy-duty, low-impact, wear-resistant parts such as
worms, spindles, shafts and collars.
After carbonitriding treatment, it is used to manufacture
transmission parts with large size and high low temperature impact
toughness, such as shafts and gears.
