Since our establishment, we have always adhered to the policy of 'high technology, high quality and high service', and with professional and unique innovative ideas, we have grown rapidly in the industry of hexagonal Valve Steel bar 21-4N, 4340 Alloy Steel Bar, 1.3343 HSS Plate in China. We always work hard to create great values for our customers and offer our customers better products & services. We sincerely hope that you can provide valuable suggestions and enthusiastic help to our work. In line with the business philosophy of quality first and reputation first, we take the pursuit of first-class products and service to global customers as our goal.
4140: The steel is made of alloy steel, which complies with the standard ASTM A29 / A29M-04
This product has high strength and high hardenability. Good toughness, small deformation during quenching, creep strength and long-term strength at high temperature. Used for forgings requiring higher strength and larger quenched and tempered sections than 35CrMo steel. Such as large gears for locomotive traction, supercharger driving this wheel, rear axle, connecting rods and spring clips under heavy load, can also be used for oil deep well drill pipe joints and fishing tools below 2000m
4140 steel shaft standard
The standard is listed below
USA ASTM4140
JapanSCM440
Germany 42CRMO4 1.7725 steel bar
Machined 4140 steel shaft
Forged steel bar
42CrMo steel belongs to ultra high strength steel, with high strength and toughness, hardenability is also good.
Technical parameters
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Specifications |
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Chemical component |
C ：0.38～0.45% Si：0.17～0.37% Mn：0.50～0.80% S ：≤0.035% P ：≤0.035% Cr：0.90～1.20% Ni：≤0.30% Cu：≤0.30% Mo：0.15～0.25%[ |
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Mechanical property |
Tensile strengthσb/MPa)：≥1080
Yield strength(σs/MPa)：≥930 Elongation (δ5/%)：≥12 |
Usage
®4140 material can be used to produce shaft and steel roller, cnc machine
®Delivery time 25-35workdays
®belongs to chromoly alloy steel
Stock 4140 steel bar
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Big: Many cases, sufficient experience, teamwork.
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Our Service
We love an incredibly fantastic standing amid our consumers for AISI 4140 SAE 4340 Forged Forging Steel Railway locomotive DC AC Traction Motors Rotor shafts Armature splined spline hollow shafts 34CrNiMo6(42CrMo4, 1.7225). We've maintained a strong reputation in the industry for many years. Reviewing the company's development history and analyzing the company's current situation will help us correctly understand and grasp the company's development trend under the new situation.