HSS 2½ × 1¼ × ⅛" (63.5 × 31.75 × 3.18 mm) ASTM A500 Grade B/C Rectangular HSS
63.5x31.75x3.18mm Steel rectangular hss in ASTM A500 Grade B, Grade C to ASTM A500/A500M, with an uncoated steel surface suitable for further processing or painting. Nominal weight 4.233495 kg/m.
Minimum order
Minimum 10 t per size. If the size is already in the current production cycle, we can accept orders from 5 t. Standard length 6 m; 4–12 m on request. We confirm the minimum, lead time and grade in your quote.
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Minimum order: 10 t per size (from 5 t if the size is in production)
Applications & Usage
This medium-duty Steel rectangular hss is commonly specified for furniture manufacturing, enclosures, brackets, and general fabrication. The 3.18mm wall thickness provides excellent strength-to-weight ratio while maintaining workability. The natural mill finish provides a cost-effective solution for applications where aesthetics are secondary. Available in standard lengths of 6m, this profile can be easily cut, drilled, and welded to suit your specific requirements.
Technical Specifications
| Specification | Value |
|---|---|
| Dimensions | 63.5mm × 31.75mm × 3.18mm |
| Weight per Meter | 4.233 kg/m |
| Material | Steel |
| Alloy/Grade | ASTM A500 Grade B, C |
| Standard | ASTM A500/A500M |
| Standard Length | 6m |
| Designation (inch) | HSS 2½ × 1¼ × ⅛ |
| Weight (lb/ft) | 2.84 lb/ft |
| Minimum Order per Size | 10 t |
| Cut-to-Length Range | 4000 – 12000 mm |
Section Properties
Calculated with the AISC design wall thickness (0.93 × nominal); mass and length per tonne use the nominal wall.
| Property | Value |
|---|---|
| Cross-sectional area(A) | 5.06 cm² |
| Second moment of area(Ix) | 24.4 cm⁴ |
| Second moment of area(Iy) | 8.13 cm⁴ |
| Radius of gyration(ix) | 2.20 cm |
| Radius of gyration(iy) | 1.27 cm |
| Elastic section modulus(Wel,x) | 7.70 cm³ |
| Elastic section modulus(Wel,y) | 5.12 cm³ |
| Plastic section modulus(Wpl,x) | 9.89 cm³ |
| Plastic section modulus(Wpl,y) | 6.05 cm³ |
| Torsional inertia constant(It) | 20.8 cm⁴ |
| Torsional modulus constant(Ct) | 8.97 cm³ |
| Surface area per metre(As) | 0.180 m²/m |
| Length per tonne | 236 m |
Grade strength and capacity
Minimum strength of each grade this size is rolled in, with the indicative capacity calculated on the AISC design wall (0.93 × nominal).
| Grade | Min. yield | Tensile | Bending Wel·fy | Axial A·fy |
|---|---|---|---|---|
| Grade B | 46 ksi (315 MPa) | 58 ksi (400 MPa) | 2.43 kNm · 1.79 kip·ft | 159 kN · 35.8 kips |
| Grade C | 50 ksi (345 MPa) | 62 ksi (425 MPa) | 2.66 kNm · 1.96 kip·ft | 175 kN · 39.2 kips |
Indicative values from nominal dimensions: Wel × fy and A × fy, without buckling, cross-section class or partial safety factors. Not a design check.
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