Home»Grades > Special Alloy > Q235q D
Q235q DApplication:Bridge structure with steel
CategoryTypeSteel gradeCountry
Grades Special Alloy Q235q DChina

Chemical composition%of the ladle analysis of gradeQ235q D

C(%)Si(%)Mn(%)P(%)S(%)
≤0.18≤0.300.50~0.80≤0.025≤0.025

Mechanics performance 



Steel thickness/mm: more than 16
The yield point | σ s frequency/MPa: 235
Tensile depth | σ b frequency/MPa: 390
Elongation | δ frequency / (%) 5:26
Impact absorption power AKV/J | testing temperature / ℃ :-20
Impact absorption power AKV/J | longitudinal frequency/J | : 27
Impact absorption power AKV/J | time frequency/J | : 27
180 ° of cold bending test | d-apex diameter, a-the following steel thickness thickness when/mm | than 16: d = 1.5 a
180 ° of cold bending test | d-apex diameter, a-the following steel thickness thickness when/mm | > 16: d = 2.5 a
Mechanical properties of gradeQ235q D
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)
564(≥)189(≥)211231Solution and Aging,Annealing,Ausaging,Q+T,etc224
Physical properties of gradeQ235q D
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
539(≥)353(≥)222421Solution and Aging,Annealing,Ausaging,Q+T,etc143
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
996842813
Q235q DRange 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
Y1Cr18Ni9China
Improve the machinability, ablation resistance. Suitable for automatic lathe production of bolt and nut
1Cr18Ni9China
High strength after cold forming, but elongation than 1 cr17ni7 slightly worse. Used in architectural decoration parts
1Cr18Mn10Ni5Mo3NChina
Of urea with good corrosion resistance, can produce urea corrosion of the equipment.
1Cr17Ni7China
High strength after cold forming. Used in railway vehicle, conveyor belt, bolt and nut, etc
Y1Cr18Ni9SeChina
Improve the machinability, ablation resistance. Suitable for automatic lathe production of rivets, screws
0Cr18Ni9China
Seamless stainless steel tubes for boiler and heat exchanger
00Cr19Ni10China
Carbon content lower than 0Cr19ni9 steel, excellent intergranular corrosion resistance, is used for welding after the class is not processed parts
1Cr17Mn6Ni5NChina
Nickel steel grade, instead of number 1 cr17ni7 and magnetism after cold working, used in railway vehicle, etc
1Cr18Mn8Ni5NChina
Nickel steel, instead of 1cr18ni9
0Cr19Ni9NChina
Based on 0cr19ni9 plus N, strength increase and the plastic is not down. Reduce the thickness of the material. As a structure with strength components
0Cr19Ni10NbNChina
Based on zero cr19ni9 plus N and Nb, with better than 0 cr19ni9 properties and USES
00Cr18Ni10NChina
In 00cr19ni10 adding N, on the basis of the above grades also features, use the same as the 0 cr19ni9n, but better intergranular corrosion resistance
1Cr18Ni12China
Compared with 0 cr19ni9, processing low hardenability. Used for spinning processing, special drawing, cold heading
0Cr23Ni13China
Corrosion resistance and heat resistance are better than 0cr19ni9
0Cr25Ni20China
Oxidation resistance is better than 0cr23ni13. Mostly used as heat resistant steel
0Cr17Ni12Mo2China
Seamless stainless steel tubes for boiler and heat exchanger
1Cr18Ni12Mo2TiChina
Seamless stainless steel tubes for boiler and heat exchanger
0Cr18Ni12Mo2TiChina
Seamless stainless steel tubes for boiler and heat exchanger
A-29 1025China
General use carbon steel rod
1025China
These products have been used typically for use in fabrication of fittings, but usage is not limited to such applications. These products are not typically used for deep forming or cupping operations.

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