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GB Q195 Details

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Q195 Application: Carbon structural steels

Category Type Grade Designations
Grades Structural Steel Q195 China - GB , GB/T 700-2006 - Carbon structural steels
ISO 630:1995 - 标准内容

Chemical composition(wt.%) of Q195 grade: GB/T 700-2006

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.12
Si - 0.3
Mn - 0.5
P - 0.035
S - 0.04
Cr - 0.3
Ni - 0.3
Cu - 0.3
N - 0.0080
This standard applies to steel product standards, technical specifications of the finished product chemical composition of the provisions of the allowable deviation.

Mechanical properties of grade Q195 GB/T 700-2006

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
278 (≥) 167 (≥) 34 43 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical properties of grade Q195 GB/T 700-2006

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
723 (≥) 589 (≥) 32 21 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 133
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
146 111 532

Q195 - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
Q195 GB China
Carbon structural steels
U11952 GB China
Carbon structural steels
Q195 YB China
Hot rolled wire rod
Q195 GB/T China
This standard applies to steel product standards, technical specifications of the finished product chemical composition of the provisions of the allowable deviation.
Q195 YB China
Carbon structural steel and low alloy steel hot-rolled steel belt

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