Complaint
4140/SMC440/1.7225/42CrMo AISI 4140 Round Bar Quenching Tempering Steel Round Steel Bar 4130 4140 Alloy Round Steel
Dimensions
Hot Rolled Round: dia.16-300 mm
Forged Round: dia.150-1200 mm
Cold Drawn Round: dia.6-30 mm
Hot Rolled Plate: 10-150 x 2000-2300 mm
Forged Block: 150-1000 x 200-1900 mm
Delivery Condition
EAF+LF+VD, Hot Rolled or Forged or Cold Drawn, Annealed or Q+T, Black surface or Machined surface, UT SEP1921 Class3 C/c or D/d
Equivalence
| AISI / SAE | DIN / W.Nr | JIS | GB |
| 4140 | 42CrMo4 / 42CrMoS4 / 1.7225 | SCM440 | 42CrMo |
Chemical Composition(%)
| Steel Grade | C | Si | Mn | P | S | Cr | Mo |
| 42CrMo4 | 0.38-0.45 | ≤ 0.40 | 0.60-0.90 | ≤ 0.035 | ≤ 0.035 | 0.90-1.20 | 0.15-0.30 |
| 1.7225 | |||||||
| 42CrMoS4 | 0.38-0.45 | ≤ 0.40 | 0.60-0.90 | ≤ 0.035 | 0.020-0.040 | 0.90-1.20 | 0.15-0.30 |
| 4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | ≤ 0.035 | ≤ 0.040 | 0.80-1.10 | 0.15-0.25 |
| SCM440 | 0.38-0.43 | 0.15-0.35 | 0.60-0.85 | ≤ 0.035 | ≤ 0.040 | 0.90-1.20 | 0.15-0.30 |
| 42CrMo | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | ≤ 0.035 | ≤ 0.035 | 0.90-1.20 | 0.15-0.25 |
Characteristics
4140/SCM440/42CrMo4 is a versatile alloy with good atmospheric corrosion resistance and reasonable strength. It shows good overall combinations of strength, toughness, wear resistance and fatigue strength.
Applications
It is suitable for manufacturing large and medium-sized plastic moulds which require a certain strength and toughness, such as locomotive traction gear, supercharger transmission gear, pressure vessel gear, rear axle, connecting rod and spring clamp with maximum load, I can also be used for drilling pipe joints andsalvage tool in deep oil wells below 2000m, and moulds of bending machines
Delivery Time: 7-10 working days for steel in stock. 20-60 working days for direct production based on the quantity.
In order to guarantee a uniform good quality, ShengHe perform necessary testing and inspection according to international standards and specifications.
ShengHe has its own lab with full equipments and a team of professional Q&A and Q&C engineers to do all the tests and analysis of the materials: chemical analysis, mechanical test, UT test, microstructure analysis, hardness checking, etc. The lab also provide third party inspection service.
Ultrasonic testing
Spectrographical analysis
Hardness testing
Microstructure analysis
Tensile testing
Impact testing
We do pre-shipment inspection on all product before shipment
Our Factory
Our Product(steel round bars, flat bars, forged blocks,precision finished mold plate)
Q6: Can we visit your company and factory?
Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.
