HRB400 Rebar 14mm Q235B

HRB400 Rebar 14mm Q235B

This table outlines the technical specifications of HRB400 14mm rebar (specialized for heavy-duty concrete reinforcement) and Q235B steel (versatile structural material), highlighting their complementary roles in robust construction projects.

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Product details

HRB400 Rebar 14mm, paired with Q235B structural steel, forms a robust combination designed to meet the demands of heavy-duty construction projects. This 14mm diameter high-strength rebar delivers exceptional reinforcement for critical concrete structures, while Q235B—a versatile carbon steel—complements it in secondary components, creating a balanced system that blends strength, durability, and practicality.

Parameter	HRB400 Rebar 14mm	Q235B Steel	Unit	Remarks
Material Grade	HRB400 (High-Strength Deformed Reinforcing Bar)	Q235B (Carbon Structural Steel)	—	Both adhere to Chinese construction standards
Chemical Composition	C ≤0.25%, Si ≤0.80%, Mn ≤1.60%, P ≤0.045%, S ≤0.045%, with trace Nb, V, Ti	C ≤0.20%, Si ≤0.35%, Mn ≤1.40%, P ≤0.045%, S ≤0.045%	—	HRB400 includes alloying elements for enhanced strength
Diameter/Section	14	N/A (varies by form: bars, sheets, profiles)	mm	14mm standard diameter for rebar; Q235B available in multiple forms
Weight per Meter	1.21	N/A (varies by section/thickness)	kg/m	Calculated for 14mm rebar; Q235B weight depends on specific form
Length Range	6000–12000 (customizable)	6000–12000 (customizable)	mm	Standard lengths for construction and fabrication
Yield Strength (Minimum)	≥400	≥235	MPa	HRB400 provides higher load resistance for critical structures
Tensile Strength	540–680	375–500	MPa	Typical range at room temperature
Elongation (δ5, Minimum)	≥16	≥26	%	Q235B offers greater ductility for flexible applications
Impact Toughness	≥34 (at 20°C)	≥27 (at 20°C)	J	Longitudinal specimens; resistance to sudden impact loads
Surface Treatment	Deformed (ribbed) for enhanced concrete bonding	Mill finish, galvanized, or epoxy-coated	—	HRB400 ribs ensure strong mechanical interlock with concrete
Manufacturing Standard	GB 1499.2-2018	GB/T 700-2006	—	Compliant with Chinese national standards for structural materials
Typical Applications	Reinforced concrete structures (heavy beams, columns, bridges, foundations)	General structural components (frames, supports, brackets, light fabrication)	—	Often used together in coordinated construction systems