Introduction
10mm carbon steel square bar is a solid steel bar with a 10 mm × 10 mm square cross-section, made from carbon steel. It is widely used in construction, metal fabrication, machinery components, and structural applications.
| Grade | Q195 Q215 Q235 Q345 Q355,etc. | |||
| Standard | ASTM, DIN, JIS, BS, GB/T | |||
| Tolerance | ±1% | |||
| Diameter | 5.5-250mm | |||
| length | 1-12m, can be customized | |||
| MOQ | 5 Tons | |||
| Applications | Structural Supports, Fencing and Guardrails, Scaffolding and Formwork, Glass curtain wall frame | |||
Key Features
Good Machining Performance
Carbon steel square bars can be easily cut, drilled, and machined, making them suitable for manufacturing small mechanical components and metal parts.
Consistent Dimensional Accuracy
Produced through controlled rolling processes, the square bar maintains uniform dimensions.
Materials and Chemical Composition
Based on Q235B (the most commonly used carbon structural steel), the corresponding standard for 10mm square steel is GB/T 702-2017 (hot-rolled steel bar dimensions) and GB/T 700-2006 (carbon structural steel). At the same time, the commonly used 45# high-quality carbon structural steel is also listed for comparison. (mass fraction %)
| Type of steel | C | Si | Mn | P | S | Fe |
| Q235B | 0.12~0.20 | ≤0.30 | 0.30~0.70 | ≤0.045 | ≤0.045 | Balance |
| 45# | 0.42~0.50 | 0.17~0.37 | 0.50~0.80 | ≤0.035 | ≤0.035 | Balance |
Customization Services
To meet different engineering and fabrication requirements, we provide flexible customization services for 10mm carbon steel square bar.
Custom Length
Bars can be supplied in standard lengths or cut to specific sizes according to customer requirements.
Material Grade Options
Different carbon steel grades can be selected based on mechanical performance and application needs.
Special Processing
Additional processing such as precision cutting or surface finishing can be arranged depending on project requirements.
Mechanical Properties
| Steel grade | Yield strength (MPa) | Tensile strength(MPa) | Elongation | contraction rate | Impact energy | Hardness |
| Q235B | ≥235 | 370~500 | ≥26 | - | ≥27 | HB 120~160 |
| 45# | ≥355 | ≥600 | ≥16 | ≥40 | - | ≤HB 229 |
FAQs
What materials are commonly used for 10mm carbon steel square bars?
They are typically produced from standard carbon steel grades such as ASTM, EN, or GB materials depending on customer requirements.
What is the standard length of the square bar?
Standard lengths are usually around 6 meters, but other lengths can be supplied upon request.
Are different surface finishes available?
Yes, surface finishes such as black steel, pickled surface, or coated finishes can be provided.
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