42CrMo is an ultra-high strength steel, known for its high strength, high toughness, good hardenability and tempering stability. This steel is widely used in the manufacture of mechanical parts and moulds that require high strength and toughness.
42CrMo steel belongs to ultra-high-strength steel, with high strength and toughness, hardenability is also good, no obvious tempering brittleness, tempering treatment has a high fatigue limit and resistance to multiple impacts, low-temperature impact toughness is good. 42CrMo steel is suitable for the manufacture of requirements of a certain degree of strength and toughness of the large and medium-sized plastic moulds.
42CrMo chemical composition
Carbon C :0.38~0.45%
Silicon Si :0.17~0.37%
Manganese Mn :0.50~0.80%
Sulphur S :permitted residual content ≤0.035
Phosphorus P :permissible residual content≤0.035
Chromium Cr :0.90~1.20%
Nickel Ni: allowed residual content ≤ 0.30%
Copper Cu: Residual content allowed ≤ 0.30%
Molybdenum Mo:0.15~0.25%
Mechanical Properties of 42CrMo Steel
Hardness : Annealed,147~241HB
42CrMo mechanical properties:
Tensile strength σb (MPa): ≥1080(110)
Yield strength σs (MPa): ≥930(95)
Elongation δ5 (%): ≥12
Section shrinkage ψ (%): ≥45
Impact work Akv (J): ≥63
Impact toughness value αkv (J/cm2): ≥78(8)
Hardness :≤217HB
In order to improve the life of the mould to achieve more than 800,000 die times, can be implemented on the pre-hardened steel quenching and low-temperature tempering of the hardening method to achieve. Quenching in 500-600 ºC preheating 2-4 hours, and then in 850-880 ºC insulation for a certain period of time (at least 2 hours), into the oil cooling to 50-100 ºC out of the oil air-cooled, quenched hardness of up to 50-52 HRC, in order to prevent cracking should be carried out immediately 200 ºC low-temperature tempering treatment, tempering, hardness can be maintained more than 48HRC
Our Promise
1. How much per kilogram?
1USD per kilogram.
2. What is the minimum order quantity?
From one kilogram.
3. How many mm long is the typical material?
Usually 6000mm long.
4. Can I have it cut for free?
Yes, we have cutting equipment.
5. Can I receive payment through vtb bank?
Yes, you can.
6. What if I get a bad material?
We will resend it to you.
7. What is the payment method?
TT/30%/70
8. Can I inspect the goods?
You can inspect the goods in person or appoint a third party to inspect the goods.
9. How long has your company been established?
16 years
10. How can I be sure that the goods I receive are qualified?
Our company has its own spectrometer, each batch of materials will be tested and photographed for the customer to keep a record. 11.
11. What is your delivery time?
7-10 days for stock, 30-45 days for cus
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42CrMo is an ultra-high strength steel, known for its high strength, high toughness, good hardenability and tempering stability. This steel is widely used in the manufacture of mechanical parts and moulds that require high strength and toughness.
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