Carbon Steel Bar
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MWalloys offers a comprehensive range of carbon steel bars—round, square, flat, hexagonal and key bars—available in common grades such as A36, AISI 1045, AISI 1018, AISI 1020 and EN 10025 S235JR. Our carbon steel bars deliver excellent weldability, machinability and cost‑effectiveness for construction, machinery, automotive and general engineering applications.
Full Specifications & Parameters
| Grade | Chem. Composition (%)* | Tensile (MPa) | Yield (MPa) | Elongation (%) | Shape | Size Range | Weight (kg/m)** | Typical Uses |
|---|---|---|---|---|---|---|---|---|
| A36 | C 0.25–0.29, Mn 0.8–1.2, P ≤0.04, S ≤0.05, Fe Balance | 400–550 | ≥250 | ≥20 | Round | Ø5 mm–Ø200 mm | 0.02–25.1 | Structural beams, supports |
| 1045 | C 0.43–0.50, Mn 0.6–0.9, Si ≤0.4, P ≤0.04, S ≤0.05, Fe Balance | 565–635 | 310–355 | ≥16 | Round | Ø5 mm–Ø150 mm | 0.04–14.0 | Shafts, axles, machinery parts |
| 1018 | C 0.15–0.20, Mn 0.60–0.90, P ≤0.04, S ≤0.05, Fe Balance | 370–500 | ≥275 | ≥15 | Round | Ø3 mm–Ø100 mm | 0.01–9.2 | Cold‑formed parts, fasteners |
| 1020 | C 0.18–0.23, Mn 0.30–0.60, P ≤0.04, S ≤0.05, Fe Balance | 400–550 | ≥305 | ≥16 | Round | Ø3 mm–Ø100 mm | 0.01–9.2 | Pins, spindles, general engineering |
| S235JR | C ≤0.17, Mn ≤1.40, P ≤0.035, S ≤0.035, Fe Balance | 360–510 | ≥235 | ≥26 | Square | 5 × 5 mm–100 × 100 mm | 0.02–78.5 | Construction profiles, frameworks |
| Flat Bars | Same as A36 or S235JR | 400–550 | ≥250 | ≥20 | Flat | 10 × 3 mm–200 × 50 mm | 0.02–78.5 | Brackets, supports, fabrication |
| Hex Bars | Same as 1045 | 565–635 | 310–355 | ≥16 | Hexagon | Flats 6 mm–80 mm | 0.02–20.2 | Fasteners, shaft components |
| Key Bars | Same as A36 | 400–550 | ≥250 | ≥20 | Key | Standard DIN 6885 sizes | Variable | Keyways, couplings |
* Typical composition ranges per grade; refer to MTR for exact values.
** Weight per meter for round bars; flat and square calculated accordingly.
Why Choose MWalloys
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Grade Variety: From structural A36 to high‑strength 1045, cover all general‑purpose needs.
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Strict Quality Control: ISO 9001 certification, 100% mill test reports, third-party inspections.
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Precision Processing: CNC cutting, centerless grinding, chamfering, drilling and thread rolling.
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Competitive Pricing: Bulk production and strong raw‑material partnerships keep costs low.
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Global Service: Export experience to over 50 countries; timely delivery and full documentation.
Logistics & Ordering
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Lead Time: 2–4 weeks after order confirmation
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Packaging: Bundled, wooden crates or plastic‑wrapped coils; custom packaging on request
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Shipping Terms: FOB, CIF, EXW, DDP available
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Order Steps:
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Send grade, shape, size & quantity to sales@MWalloys.com
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Receive detailed quotation & proforma invoice
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Confirm order and arrange deposit
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Production → Quality inspection → Dispatch → Tracking updates
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FAQs
| Q | A |
|---|---|
| What is the minimum order quantity for carbon steel bars? | Standard MOQ is 100 kg; smaller trial orders can be arranged. |
| Can you provide custom bar lengths? | Yes, we offer cut‑to‑length service with tolerances to ±1 mm. |
| Are material certificates included? | All bars come with MTRs; 3.1/3.2 inspection reports available. |
| What surface finishes are available? | Mill finish, centerless ground, polished, black oxide. |
| Do you offer secondary machining? | Yes—drilling, chamfering, threading and more per drawing. |
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