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Category | Type | Steel grade | Standard | Country |
---|---|---|---|---|
Grades | Special Alloy | Q345GNH | GBT | China |
Chemical composition%of the ladle analysis of gradeQ345GNH
C(%) | Si(%) | Mn(%) | S(%) | Cu(%) | Ti(%) | Other(%) |
---|---|---|---|---|---|---|
Max 0.12 | 0.20-0.60 | 0.50-0.90 | 0.035 | 0.25-0.50 | Max 0.03 | RE Max 0.15 |
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) |
---|---|---|---|---|---|---|
835(≥) | 821(≥) | 32 | 24 | 41 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 342 |
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 |
---|---|---|---|---|---|---|---|
424(≥) | 417(≥) | 41 | 31 | 13 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 241 | |
Temp. °C/°F | Creep strain limit (10000h) (Rp1,0)N/mm2 | Creep rupture strength (10000h) (Rp1,0)N/mm2 | |||||
173 | 889 | 359 |
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 |