Heat Treatment 40Cr ASTM5140 JIS SCR440 Quenching and Tempering Alloy Round Bar For Shaft Parts
Outer Diameter: 10-60mm
Material:40Cr ASTM5140 JIS SCR440
40Cr steel is one of the most widely used steels in machinery manufacturing. After quenching and tempering treatment, it has good comprehensive mechanical properties, good low temperature impact toughness and low notch sensitivity.
Chemical Composition
| C | Si | Mn | Cr | Ni | P | S | Cu | Mo |
| 0.37~0.44 | 0.17~0.37 | 0.50~0.80 | 0.80~1.10 | ≤0.30 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.10 |
Mechanical properties:
Sample blank size (mm): 25
Heat treatment:
The first quenching heating temperature (℃): 850.
Coolant: oil
Tempering heating temperature (℃): 520;
Tensile strength (σb/MPa): ≥810 (when the actual hardness is 25HRC)
Yield point (σs/MPa): ≥785
Elongation after break (δ5/%): ≥9
Area shrinkage (ψ/%): ≥45
Shock absorption energy (Aku2/J): ≥47
Brinell hardness (100/3000HBW) (annealed or tempered at high temperature): ≤207
| Product name | 40Cr Alloy Round Bar |
| Outer Diameter | 10-60mm |
| Length | 3-5.8m |
| Standard | GB, ASTM, DIN, JIS |
| Material | 40Cr ASTM5140 JIS SCR440 |
| Surface | Oiled and Bright |
| Packing | Standard Export Packing, Or According to Customer Requirements. |
| Application | Precision Machinery,Automobiles,Motorcycles,Electric Vehicles Petrochemicals |
| Port of delivery | QINGDAO, TIANJIN and SHANGHAI |
| Payment term | T/T or L/C |
| Certificate | ISO 9001 |
| Lead time | 15-50days according to order quantity |
| MOQ | 5tons each size |
| Type | Round Bar |
| Technique | Heat Treatment |
| Inspection | Acceptable |
| Price term | FOB,CIF,CFR |
Delivery Stauts
Quenching and Tempering State
Hardness
≤207HBW
Application
(1)It is used to manufacture mechanical parts under medium load and medium speed working conditions, such as steering knuckles of automobiles, rear axle shafts and gears, shafts, worms, spline shafts, top sleeves, etc. on machine tools
(2)It can also be quenched and tempered and high After frequency quenching, it is used to manufacture parts with high surface hardness and wear resistance without large impact, such as gears, sleeves, shafts, main shafts, crankshafts, mandrels, pins, connecting rods, screws, intake valves, etc.; It can also be quenched, medium or low temperature tempered to make parts under heavy load
Our Company
Main standards: DIN2391, DIN2445, EN10305, DIN1629, DIN1630, ASTM A179.
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Heat Treatment Chromoly Round Bar 40Cr ASTM 5140 JIS SCR440 For Shaft Parts Images
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