Small Square Billet 120x120mm Q235B

Small Square Billet 120x120mm Q235B - Image 3

Small Square Billet 120x120mm Q235B

This 120x120mm Q235B small square billet offers a practical solution for medium-scale fabrication, combining consistent mechanical properties with excellent processability. Its larger cross-section compared to smaller billets provides increased material volume for components needing greater structural support, while retaining the cost-effectiveness and versatility of Q235B grade steel.

2010 ESTABLISHED

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Product details

The Small Square Billet 120x120mm Q235B is a robust carbon carbon cost-effectiveGB/T 700-2006 compliant carbon structural carbon steel, engineered to deliver reliable performance in medium-scale manufacturing and construction projects. This 120x120mm square billet strikes an ideal balance between size, strength, and workability, making it a versatile choice for fabricators seeking a cost-effective material for components requiring moderate structural support.

Parameter	Value	Remarks
Standard	GB/T 700-2006	Carbon structural Steel Standard
Grade	Q235B	Impact tested at 20℃
Chemical Composition (wt%)
– Carbon (C)	≤0.20	Balances strength and weldability for medium-section billets
– Silicon (Si)	≤0.35	Aids deoxidation and enhances structural stability
– Manganese (Mn)	≤1.40	Improves toughness and workability in fabrication
– Phosphorus (P)	≤0.045	Minimized to prevent cold brittleness
– Sulfur (S)	≤0.045	Controlled to reduce hot cracking during processing
Mechanical Properties
– Yield Strength (ReL)	≥235 MPa	Ensures load-bearing capacity for medium-scale components
– Tensile Strength (Rm)	370–500 MPa	Provides reliable structural integrity under stress
– Elongation (A)	≥26%	Excellent ductility for bending, forming, and welding
– Impact Energy (Akv)	≥27 J	At 20℃ (longitudinal specimen), resists impact fracture
– Bending Test	180°	Bend diameter: a (where ‘a’ = 120mm, for thickness ≤60mm)
Dimensions	120×120mm (square cross-section)	Nominal size; tolerances comply with GB/T 702-2017
Length	6–12m (customizable)	Standard delivery range; longer lengths available on request
Surface Quality	Free from cracks, folds, and excessive scale	Ensures suitability for welding, machining, and coating
Delivery Condition	Hot rolled (standard); cold drawn (optional)	Hot rolled for general use; cold drawn for tighter dimensional accuracy
Typical Applications	Medium-sized structural components, machinery frames, support brackets, agricultural equipment parts, and fabrication of custom metal structures	Ideal for projects requiring a balance of size, strength, and workability