◉ Product Description

42CrMo (AISI4140) steel is a Chinese alloy steel, and has high strength and toughness, good hardenability, and no obvious temper brittleness. After quenching and tempering treatment, it has high fatigue limit and resistance to multiple impacts, and good low temperature impact toughness. 42CrMo alloy steel generally used for engineering steel purpose, and for making important parts requiring higher strength and larger size of the quenched section than 35CrMo steel, such as shafts, crankshafts, large gears for locomotive traction, supercharger gears, gearbox gears, engine cylinders, oil drill pipe joints, large load rods and spring clips.

 

42CrMo Steel Chemical Composition


Chemical Composition %
Steel GradeCSiMnPSCrMo
42CrMo0.38 to 0.450.17 to 0.370.50 to 0.80≤ 0.030≤ 0.0300.90 to 1.200.15 to 0.25

42CrMo Alloy Steel Mechanical Properties

· Yield strength: ≥ 930 MPa

· Tensile strength: ≥ 1080 MPa

· Elongation: ≥12%

· Rate of reduction in area: ≥45%

· Impact absorbing energy: ≥ 63 J

· Material Brinell hardness: ≤229 (Annealed or high temperature tempered steel rod)

· Sample diameter: 25mm

Heat treatment specification

· First quenching heating temperature: 850 °C (Cooling – oil)

· Tempering heating temperature: 560 °C (Cooling – water, oil)

Equivalent

42CrMo steel equivalent to US AISI ASTM, European EN (Germany DIN EN, UK BSI EN, France NF EN, Japan JIS, and ISO standard.

ChinaUSAGermanyUKJapanFranceISO
StandardGradeStandardGradeStandardGrade (Steel number)StandardGrade (Steel number)StandardGradeStandardGrade (Steel number)StandardGrade
GB/T 307742CrMoSAE, AISI;
ASTM A29/A29M
AISI 4140 steelDIN EN 10083-342CrMo4 (1.7225)BS EN 10083-342CrMo4 (1.7225)JIS G4105SCM440NF EN10083-342CrMo4 (1.7225)ISO 683-17

 

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◉ FAQ

Q: How many days of your delivery? 
 A:  The general delivery is 20~45 days according to your quantity. If your order is urgent, we would like to try our best to meet your requests.
Q: What's your main market?
 A: We mainly export to the Middle East,  South-Eastern Asia And South America,Asia, etc.
Q: Are you manufacturery or trade company?
 A: Yeah, we are. We are manufacturer, has more than 4 years of professional production experience.
Q: Can I get some samples?
 A: Yes, we can provide you sample, but you need to pay for the sample and freight firstly.We will return the sample fee after you make an order.
Q: How do you guarantee the quality of the products?
 A: Each product from our factory has strict testing procedures, and must be 100% quality before delivery.
Q: After Services:
A:(1) Our sales team will response for your question within 24 hours (Holidays included).
    (2) Technical Support will be available in any time.
    (3)Free replacement will provide once the failure confirmed caused by our product quality. 
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