Carbon & Alloy Steel · factory-direct
Alloy steel round bar - 42CrMo4 / AISI 4140
High-strength chromium-molybdenum bar, supplied quenched and tempered, for shafts, gears and high-load components.
- Grade
- 42CrMo4 / 4140
- Standard
- EN 10083-3 · A29
- Diameter
- Ø12-300 mm
- Length
- 3,000 / 6,000 mm
- Condition
- +QT / +A
- Certificate
- EN 10204 3.1
- Mill test certificate with every bundle
- Cut-to-length and inspection available
- SGS pre-shipment inspection on request
Typical lead time 25-35 days ex-works · MOQ 2 t · FOB Ningbo / CIF Ashdod / DAP site
42CrMo4 (AISI 4140) is a chromium-molybdenum low-alloy steel supplied quenched and tempered. It offers an excellent balance of tensile strength, toughness and fatigue resistance, and machines well in the +QT condition.
Products ship with heat traceability and the documentation agreed in your quote.
Typical applications
- Construction & Infrastructure
- Manufacturing & Fabrication
Chemical composition (heat analysis, %)
| C | Si | Mn | P | S | Cr | Mo |
|---|---|---|---|---|---|---|
| 0.38-0.45 | ≤ 0.40 | 0.60-0.90 | ≤ 0.025 | ≤ 0.035 | 0.90-1.20 | 0.15-0.30 |
Mechanical properties (+QT, EN 10083-3)
| Section | Re ≥ (MPa) | Rm (MPa) | A ≥ (%) | KV ≥ (J) | HB |
|---|---|---|---|---|---|
| Ø ≤ 40 | 650 | 900-1100 | 12 | 35 | 265-330 |
| 40 < Ø ≤ 100 | 550 | 800-950 | 13 | 35 | 235-280 |
| 100 < Ø ≤ 160 | 500 | 750-900 | 14 | 35 | 220-260 |
| Diameter (mm) | Tolerance | Weight (kg/m) | Lengths (mm) | Availability |
|---|---|---|---|---|
| 12 | h11 | 0.89 | 3000 / 6000 | Standard |
| 20 | h11 | 2.47 | 3000 / 6000 | Standard |
| 32 | h11 | 6.31 | 3000 / 6000 | Standard |
| 50 | h11 | 15.4 | 3000 / 6000 | Standard |
| 80 | k12 | 39.5 | 3000 / 6000 | Standard |
| 100 | k12 | 61.7 | 3000 / 6000 | Standard |
| 150 | k12 | 139 | 3000 / 6000 | To order |
| 200 | k12 | 247 | 3000 / 6000 | To order |
Packaging
- Steel-strapped bundles, seaworthy packing
- Every bundle tagged with grade, heat, size and order
- Anti-rust coating and end protection on request
Delivery
- Container loading
- 20 ft ≈ 25 t
- Lead time
- 25-35 days
- Incoterms
- FOB · CIF · DAP
- Ports
- Ningbo → Ashdod / Haifa
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