1. 708A42 Chinese brand: 42CrMo4, is an industrial material. CrMo is the chemical element chromium molybdenum.

2. 42CrMo4 steel plates are delivered in a heat-treated (normalized, annealed or high-temperature tempered) or non-heat-treated state. The delivery status should be specified in the contract.

3. 42CrMo4 steel plate implementation standard EN 10083/3-2006

4. 42CrMo4 steel plate standard comparison:

Chinese GB 42CrMo, Russian ГOCT 38XM, American AISI 4140/4142, British BS 708M40/708A42/709M40, French NF 40CD4/42CD4, German DIN 41CrMo4/42CrMo4, Japanese JIS SCM4, international ISO 683/1 3

5. Characteristics of 42CrMo4 steel plate: 42CrMo4 has high strength, hardenability, good toughness, small deformation during quenching, and high creep strength and durable strength at high temperatures.

42CrMo4 steel is an improved variety of American AISI standard 4140 steel. The steel has good machinability, is easy to polish, is easy to scratch, and can be electroplated.

6. Chemical composition of 42CrMo4 steel plate:

42CrMo4 0.38-0.45 0.60-0.90 <=0.40 <=0.035 <=0.035 0.90-1.20 0.15-0.30

7. 42CrMo4 steel plate is used to manufacture forgings that require higher strength and larger quenched and tempered cross-sections than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, rear axles, connecting rods and spring clips that are subject to extremely high loads. , 42CrMo4 can also be used in deep oil well drill pipe joints and fishing tools below 2000m. Suitable for one-piece molding of electrical appliances and electronic molds. Suitable for plastic molds and mold bases.