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Round Bar
Hot-rolled (±0.3mm tol.) or cold-drawn (±0.02mm tol.) round bars in grades 45#-42CrMo, 304-316L, H13. Grain size ≥7, straightness ≤0.5mm/m for shafts, dies and fasteners. |
Product Name: Precision Hot Rolled/Cold Drawn Round Bar
Overview:
Hot-rolled (±0.3mm tol.) or cold-drawn (±0.02mm tol.) round bars in grades 45#-42CrMo, 304-316L, H13. Grain size ≥7, straightness ≤0.5mm/m for shafts, dies, and fasteners.
Technical Specifications:
| Parameter | Hot Rolled | Cold Drawn |
| Diameter Range | Φ10-300mm | Φ3-80mm |
| Tolerance | DIN EN 10059 Class 4 | ISO 2868 h9 |
| Surface Finish | As-rolled/Turned (Ra 3.2μm) | Ground (Ra 0.4μm)/Peeled (Ra 0.8μm) |
| Material Strength | 45#: Yield≥355MPa | GCr15: HRC 60-62 |
| Straightness | ≤1mm/m | ≤0.3mm/m |
| Heat Treatment | Normalized/Annealed | Spheroidized Annealed |
| NDT Standard | UT Class C (EN 10308) | MPI Class A (ISO 4986) |
Key Advantages:
1. Precision Dimensional Control
Cold drawn: Diameter tol. ±0.015mm
Hot rolled: Ovality ≤0.15mm
2. Customized Properties
| Application | Material Solution | Key Performance |
| Engine Crankshafts | 42CrMoH | Tensile≥900MPa, Impact≥40J |
| Injection Mold Cores | H13 ESR | HRC 48-52, Purity≤0.5 Grade |
| Aerospace Fasteners | A286 Superalloy | 650℃ Stress Rupture≥300MPa |
3. Global Compliance
USA: ASTM A29
EU: EN 10060
Japan: JIS G4051
Get Your Round Bar Quote Now!
Runying Steel Group Company occasionally has low/mild/high carbon discount steel products for sale at a low price. For more information, please follow our public Facebook page (https://www.facebook.com/tangsteel) or contact our sales team directly.
RUNYING STEEL GROUP
Tel：86-315-2199609
Fax：86-315-5538212
E-mail：admin@tsrysteel.com
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