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Q235
Data Table for: Steel Grades : Structure Steel : Q235
Chemical composition(mass fraction)(wt.%)
- C
- Si
- Mn
- P
- S
- Cr
- Ni
- 0.14～0.22
- ≤0.30
- 0.30～0.65
- ≤0.045
- ≤0.050
- ≤0.30
- ≤0.30
- Cu
- ≤0.30
Mechanical Properties
- Quantity
- Value
- Unit
- Young's modulus
- Tensile strength
- Elongation
- Fatigue
- Yield strength
- 200000 - 200000
- 650 - 880
- 8 - 25
- 275 - 275
- 350 - 550
- MPa
- MPa
- %
- MPa
- MPa
Physical Properties
- Quantity
- Value
- Unit
- Thermal expansion
- Thermal conductivity
- Specific heat
- Melting temperature
- Density
- Resistivity
- 10 - 10
- 25 - 25
- 460 - 460
- 1450 - 1510
- 7700 - 7700
- 0.55 - 0.55
- e-6/K
- W/m.K
- J/kg.K
- °C
- kg/m3
- Ohm.mm2/m
Heat Treatment:
Annealing |
Quenching |
Tempering |
Normalizing |
Q & T |
√ |
√ |
√ |
√ |
√ |
Can produce Q235 specifications and size
- Steel grade
- Specification
- Processing range(mm)
- Q235
- Q235
- Q235
- Q235
- Q235
- Q235
- Φ1 to Φ2000
- 10 to 1000
- 0.08 to 800(T)*10 to 1500(W)*Long
- Pipe/tube/slugs/donuts/cubes/other shapes
- OD: Φ4-410; WT: 1-35 mm
- THK:0.1mm Width:1500mm
Description
Mechanics performance
The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm | ≤ 16:235
The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm | > 16 ~ 40:225
The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm | > 40 to 60:215
The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm | > 60 ~ 100:205
The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm | > 100 ~ 150:195
The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm | > 150:185
Cold bending property
Sample direction: vertical
180 ° of cold bending test b = 2 a different thickness or in steel diameter/mm | than 60: d = a
180 ° of cold bending test b = 2 a different thickness or in steel diameter/mm | > 60 ~ 100: d = 2 a
180 ° of cold bending test b = 2 a different thickness or in steel diameter/mm | > 100 ~ 200: d = 2.5 a
Performance characteristics and applications
Good strength and cold, heat pressure processing performance sex and welding is a bit poor performance.
Widely used in the manufacture of sheet, steel bar, steel structure with all kinds of steel, building structure, Bridges, engine, mechanical parts, carburizing or carbon nitrogen were permeability parts, components, support, force not big pole, connecting rod, pin, shaft, screw, nut, rings, etc
GB/T 700-1988 standard and GB 700-1979 standard steel grade comparison
GB/T 700-1988 standadr:
Regardless of rank, the chemical composition and mechanical properties (σ s, σ b, the delta and the cold bending) are to be guaranteed
Rolling plate and rod of products, the mechanical properties of the guarantee condition, can according to product characteristics and application requirements, in the standard separately
GB 700-1979 standard
A1 the mechanical properties of the steel guarantee (σ s, σ b, the delta and the cold bending), B1 steel guarantee the chemical composition of the same with Q195
A1 steel cold bending test is additional guarantee conditions
1 no special steel of steel
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