42CrMo4 Hardened And Tempered Steels
42CrMo4 Hardened And Tempered Steels
42CrMo4 Hardened And Tempered Steels
42CrMo4 Hardened And Tempered Steels
42CrMo4 Hardened And Tempered Steels

42CrMo4 Hardened And Tempered Steels

42CrMo4 Mechanical property Tensile strength σb (MPa) : ≥1080(110) Yield strength σs (MPa) : ≥930(95) Elongation δ5 (%) : ≥12 Section shrinkage (%) : ≥45 Impact power Akv (J) : ≥63 Impact toughness value αkv (J/cm²) : ≥78(8) Hardness: ≤217HB Specimen size: specimen blank size is 25mm Heat treatment specification and metallographic structure Heat treatment specification: quench 850℃, oil cold; Tempering 560℃, water cooling, oil cooling. Metallographic structure: tempered sorbite.

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Product Introduction

42CrMo4 hardened and tempered Steels

42CrMo4 is a kind of high strength alloy steel, with good mechanical properties and heat treatment properties, widely used in construction machinery and other fields.

1. What material is 42CrMo4?

42CrMo4 is a low alloy steel, belonging to Cr-Mo alloy steel. It has high strength, high hardness and high wear resistance. Generally used in the production of shaft parts, gears, couplings, universal joints and hydraulic cylinders and other mechanical parts.

2. The difference between 42CrMo4 and 42CrMo?

42CrMo4 and 42CrMo are both Cr-Mo alloy steels, the difference is that 42CrMo4 has a slightly higher hardness. The hardness of 42CrMo4 can reach 260-320HB, while the hardness of 42CrMo is 217-229HB.

3. 42CrMo4 chemical composition standard?

The chemical composition standards of 42CrMo4 are as follows:

C: 0.38%-0.45%

Si: 0.40%

Mn: 0.60%-0.90%

P: ≤0.035%

S: ≤0.035%

Cr: 0.90%-1.20%

Mo: 0.15%-0.30%

4. What material is 42CrMo4+QT?

42CrMo4+QT is 42CrMo4 steel after quenched and tempered (quenched and tempered), with higher strength and better toughness, suitable for the production of large mechanical parts requiring high strength and toughness.

5. 42CrMo4 heat treatment process and hardness?

The heat treatment process is quenching (860℃) + tempering (580℃-680℃), and the hardness is 260-320HB (after quenching) and ≥22HRC (after tempering).

6. What material is 42CrMo4 equivalent to in China?

42CrMo4 is equivalent to 42CrMo steel whose steel number is Chinese standard GB/T3077.

7. What material is 42CrMo4V?

42CrMo4V is a modified 42CrMo4 steel, adding trace amounts of vanadium to improve the hardness and strength of the steel. It has better mechanical properties than 42CrMo4 and is suitable for mechanical parts with high strength requirements.

8. What is the density of 42CrMo4?

42CrMo4 has a density of 7.85g/cm³.

9. Does 42CrMo4 correspond to the domestic brand?

42CrMo4 corresponds to 42CrMo steel with the domestic grade 42CrMo or GB/T3077-2015.

10. Does 42CrMo4 correspond to domestic materials?

42CrMo4 corresponds to the domestic high-quality alloy steel materials 40CrNiMoA, 34CrNiMo6, 40CrMoV4 and so on.