HRB400 Rebar 12mm Q235B

HRB400 Rebar 12mm Q235B

This table details the technical specifications of HRB400 12mm rebar (specialized for concrete reinforcement) and Q235B steel (versatile structural material), emphasizing their complementary roles in robust construction projects.

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Product details

HRB400 Rebar 12mm, combined with Q235B structural steel, forms a powerful duo for modern construction, merging high-strength reinforcement with versatile structural support. This 12mm diameter deformed rebar (HRB400) is engineered to reinforce critical concrete elements, while Q235B—a reliable carbon steel—complements it in secondary structural components, creating a balanced system for durability, strength, and cost-effectiveness.

Parameter	HRB400 Rebar 12mm	Q235B Steel	Unit	Remarks
Material Grade	HRB400 (High-Strength Deformed Reinforcing Bar)	Q235B (Carbon Structural Steel)	—	Both comply with 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 contains alloying elements to enhance strength
Diameter/Section	12	N/A (varies by form: bars, sheets, profiles)	mm	12mm standard diameter for rebar; Q235B available in multiple forms
Weight per Meter	0.888	N/A (varies by section/thickness)	kg/m	Calculated for 12mm rebar; Q235B weight depends on specific form
Length Range	6000–12000 (customizable)	6000–12000 (customizable)	mm	Standard lengths for construction and fabrication needs
Yield Strength (Minimum)	≥400	≥235	MPa	HRB400 provides higher load-bearing capacity 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	—	Adheres to Chinese national standards for structural materials
Typical Applications	Reinforced concrete structures (beams, columns, slabs, bridges, foundations)	General structural components (frames, supports, brackets, light fabrication)	—	Frequently used in conjunction for balanced construction systems