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| Categories | Steel Round Bar |
|---|---|
| Brand Name: | TSING SHAN |
| Model Number: | 42CrMo4 |
| Certification: | ISO MTC SGS |
| Place of Origin: | China |
| MOQ: | 1 Ton |
| Price: | 880 USD/TON |
| Payment Terms: | L/C, Western Union, T/T |
| Supply Ability: | 500Tons |
| Delivery Time: | 7 Days |
| Packaging Details: | Wooden Pallet |
| Steel grade: | Alloy Steel |
| Alloy or not: | Is Alloy |
| Technique: | Hot Rolled,Cold Drawn |
| Type: | Alloy Steel Bar |
| Standard: | ASTM,DIN |
| Shape: | Round |
| Product name: | 42CrMo4 qt alloy steel round bars |
| Heat treatment: | Normalized +Annealed +Quenched + Tempered |
| Company Info. |
| JIANGSU MITTEL STEEL INDUSTRIAL LIMITED |
| Verified Supplier |
| View Contact Details |
| Product List |
1: AISI 4140 steel introduction
AISI 4140 is defined as a low alloy steel which has 1% Cr-Mo as
strengthening alloy elements.Compared with AISI 4130, it has a
higher carbon content with good balance of strength, toughness
,abrasion and impact resistance and heat treatment capabilities,but
poor in weldability characteristics.AISI 4140 is generally supplied
in quenched and tempered condition with hardness 28-32HRC
2: AISI 4140 Steel equivalent
| Country | China | Japan | Germany | USA | British |
| Standard | GB/T 3077 | JIS G4105 | DIN (W-Nr.) EN 10250 | AISI/ASTM ASTM A29 | BS 970 |
| Grade | 42CrMo | SCM440 | 42crmo4/1.7225 | 4140 | EN19/709M40 |
3: AISI 4140 steel chemical composition
| Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
| 42CrMo | 0.38-0.45 | 0.17-0.37 | 0.5-0.80 | ≤0.035 | ≤0.035 | 0.9-1.2 | 0.15-0.25 | - |
| SCM440 | 0.38-0.43 | 0.15-0.35 | 0.6-0.85 | ≤0.035 | ≤0.04 | 0.9-1.2 | 0.15-0.30 | - |
| 42crmo4/1.7225 | 0.38-0.45 | ≤ 0.4 | 0.6-0.9 | ≤0.025 | ≤0.035 | 0.9-1.2 | 0.15-0.30 | - |
| 4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | ≤0.035 | ≤0.04 | 0.8-1.1 | 0.15-0.25 | - |
| EN19/709M40 | 0.35-0.45 | 0.15-0.35 | 0.5-0.80 | ≤0.035 | ≤0.035 | 0.9-1.5 | 0.2-0.40 | - |
4: AISI 4140 steel mechanical properties(for guidance only)
| Grade | Tensile strength σb(MPa) | Yield strength σs (MPa) | Elongation δ5 (%) | Reduction ψ (%) | Impact Value Akv (J) | Hardness |
| 4140 | ≥1080 | ≥930 | ≥12 | ≥45 | ≥63 | 28-32HRC |
5: AISI 4140 steel overviews
| Size | Round | Dia 6-1200mm |
| Plate/Flat/Block | Thickness 6mm-500mm | |
| Width 20mm-1000mm | ||
| Heat treatment | Normalized ; Annealed ; Quenched ; Tempered | |
| Surface condition | Black; Peeled; Polished; Machined; Grinded; Turned; Milled | |
| Delivery condition | Forged; Hot rolled; Cold drawn | |
| Test | Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. | |
| Payment terms | T/T;L/C;/Money gram/ Paypal | |
| Trade terms | FOB; CIF; C&F; etc.. | |
| Delivery time | 30-45 days | |
| Application | AISI 4140 steel finds many applications as forgings for the
aerospace,oil and gas,automotive, agricultural and defense
industries etc. Typical applications for 4140 steel uses include:forged gears,spindles,fixtures,jigs,collars,Axles,conveyor parts,crow bars,logging parts,shafts,sprockets,studs,pinions,pump shafts, rams, and ring gears etc | |
6: Delivery condition
For hot forged or hot rolled bar, usually the delivery condition is
hot forged or rolled, annealed, rough turned.
For hot forged plate, usually the delivery condition is hot forged,
annealed, milled surface.
For hot rolled plate, usually the delivery condition is hot rolled,
annealed, black surface.



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