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Q195Application:Engineering and welding
CategoryTypeSteel gradeCountry
Grades Special Alloy Q195China

Chemical composition%of the ladle analysis of gradeQ195

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)Cu(%)
0.06~0.12≤0.300.25~0.50≤0.045≤0.050≤0.30≤0.30≤0.30

Mechanics performance


The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm | ≤ 16:195
The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm | > 16 ~ 40:185

Tensile strength σ b/MPa: 315 ~ 430
Elongation δ 5 / (%) (no less) than in steel different thickness or diameter/mm | than 16:33
Elongation δ 5 / (%) (no less) than in steel different thickness or diameter/mm | > 16 ~ 40:32
Elongation δ 5 / (%) (no less) than in steel different thickness or diameter/mm | > 40 to 60:-
Elongation δ 5 / (%) (no less) than in steel different thickness or diameter/mm | > 60 ~ 100:-
Elongation δ 5 / (%) (no less) than in steel different thickness or diameter/mm | > 100 ~ 150:-
Elongation δ 5 / (%) (no less) than in steel different thickness or diameter/mm | > 150:-
Impact test (1) | temperature / ℃ :-
Impact test (1) | impact absorption power AKV/J:- 

Cold bending property


Sample direction: vertical
180 ° of cold bending test b = 2 a different thickness or in steel diameter/mm | than 60:0
180 ° of cold bending test b = 2 a different thickness or in steel diameter/mm | > 60 ~ 100:-
180 ° of cold bending test b = 2 a different thickness or in steel diameter/mm | > 100 ~ 200:-

Performance characteristics and applications 


High plasticity and toughness and welding performance, good pressure processing performance, but low strength. 
Load small parts, spacers, rivets, the anchor bolt, colter, funnel, roof, low carbon steel wire, plates, welded pipe, bars, split cotters, and stamping parts, components 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

Mechanical properties of gradeQ195
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 ConditionBrinell hardness(HBW)
461(≥)364(≥)142224Solution and Aging,Annealing,Ausaging,Q+T,etc432
Physical properties of gradeQ195
PropertyDensity
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
621(≥)778(≥)224114Solution and Aging,Annealing,Ausaging,Q+T,etc413
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
538277911
Q195Range of products
Product typeProductsDimensionProcessesDeliver Status
Plates/SheetsPlates/Sheets0.08-200mm(T)*W*LForging,hot rolling and cold rollingAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Steel BarRound Bar,Flat Bar,Square BarΦ8-1200mm*LForging,hot rolling and cold rolling,CastBlack,Rough Turning,Shot Blasting,
Coil/StripSteel Coil/Steel Strip0.03-16.0x1200mmCold-Rolled&Hot-RolledAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Pipes/TubesSeamless Pipes/Tubes,Welded Pipes/TubesOD:6-219mm x WT:0.5-20.0mmHot extrusion,Cold Drawn,WeldedAnnealed,Solution and Aging,Q+T,ACID-WASHED
Cross Reference Table(Equivalent Grade)
GradeStandardCountryApplication
Q195China
Carbon structural steels
U11952China
Carbon structural steels
Q195China
Hot rolled wire rod
Q195China
This standard applies to steel product standards, technical specifications of the finished product chemical composition of the provisions of the allowable deviation.
Q195China
Carbon structural steel and low alloy steel hot-rolled steel belt

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