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JIS SCM440 Steel |JIS SCM440 Steel Weight Calculator | High Yield JIS SCM440 Steel Round Bars
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Product name |
AISI 4140 Knife Steel - SAE 4140 Steel Round Bar - ASTM 4140 Heat Treatment Steel
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keyword | 4140 steel round bar,4140 heat treatment,4140 knife |
Standard | AISI/ASTM/DIN/NF/JIS/GB/BS |
Steel Grade | AISI 4140/ASTM 4140/DIN 1.7225 /NF 40CD4 /JIS SCM440 /GB 42CrMo /BS 708M40 |
Chemical Compositions(%) | C: 0.38-0.45 Si: 0.17-0.37 Mn: 0.50-0.80 Pā¤0.035 S ā¤0.035 Cr: 0.90-1.20 Mo: 0.15-0.25 |
Mechanical properties | Tensile strength Ļb (MPa): ā„1080(110) Yield strength Ļs (MPa): ā„930(95) Elongation Ī“5 (%): ā„12 Area shrinkage Ļ (%): ā„45 Impact energy Akv (J): ā„63 Impact toughness value Ī±kv (J/cm2): ā„78(8) Hardness: ā¤217HB Sample size: sample blank size is 25mm |
Surface treatment | Black/Peeling/Polishing/Machined |
Technique | Cold/Hot rolled, Cold-Drawn or Hot Forged |
Heat Treatment | Annealed; Quenched; Tempered |
Delivery Condition | Hot Rolled or Forged/Peeled or Black Surface/Annealed or QT |
Heat treatment standard | Quenching at 850ā, oil cooling; tempering at 560ā, water cooling, oil cooling |
Metallographic structure | Tempered sorbite |
Test | SGS/UT100%/Elements Testing |
Certificate | SGS/ISO/Mill Certificate |
Delivery status
| Delivered in heat-treated (normalized, annealed or high temperature tempered) or unheated state |
Skype/Whatsapp/Wechat | +86-18269260283 |
Company website | https://steelpurchase.com/ http://www.songshunsteel.com/ |
AISI 4140 Steel Product Information
1.Describe:
4140 steel is a kind of alloy structural steel. It belongs to the steel with the American grade equivalent to the 42CrMo grade in my country. This kind of steel belongs to the medium hardenability steel with high yield, good comprehensive mechanical properties, good strength, good toughness and hardenability. High advantages, its carbon content is 0.33%-0.48%, its tensile strength is 795 MPa, and its hardness is 241HB. After heat treatment at 4140, it has good strength and good comprehensive mechanical properties, and it has good manufacturability. Fasteners, salvage tools, etc.
2.Corresponding steel number:
China GB steel number 42CrMo, Germany DIN steel number 42CrMo4, Germany DIN material number 1.7225, French NF standard 40CD4/42CD4, Japanese JIS standard SCM440, British BS standard 708M40/708A42/709M40, American AISI/ASTM 4140, American SAE 4140, American UNS Standard G41400
(4140 alloy structural steel, executive standard: ASTM A29/A29M-04)
3.Application:
It is used to manufacture forgings that require higher strength and larger quenched and tempered section than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, rear axles, connecting rods and spring clips that are heavily loaded, and can also be used for Drill pipe joints and fishing tools for oil wells below 2000m, and can be used for molds of bending machines, etc.
4.Feature:
This steel has good strength, good toughness, high hardenability, good workability, small processing deformation, quite good fatigue resistance, small deformation during quenching, and high creep strength and durable strength at high temperature.
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We provide high-quality steel, ex-factory price, support customization, strong company and factory strength; welcome your inquiry and order;please contact us for quotes.ā
songshunmoldsteel41404340
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- FOB Price : On Request
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