Cold Drawn Alloy Steel Round Bar 42CrMo AISI4140 42CrMo4 Q+T Normalized Quenched EN10083
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.
FAQ
Q1: Are you a factory or a trading company?
A: We are an integrated manufacturer with our own factory and trading team. Welcome to visit our factory at any time.
Q2: Can you support customized requirements?
A: We fully support on-demand customization, including material, specification, size, processing, and packaging customization to meet your project needs.
Q3: What payment terms do you accept?
A: We accept T/T, Western Union, PayPal, etc. Specific terms can be negotiated based on order volume.
Q4: What shipping methods do you offer?
A: We provide sea, air, and land transportation. We will recommend the most cost-effective solution based on your order volume and delivery time, or follow your designated shipping method.
Q5: How can I get an accurate quotation?
A: Please provide us with the material, specification, quantity, processing requirements, and other detailed information of the round bar, and we will offer you an accurate price and customized solution promptly.
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