Q345q CEnquiry|Print this page
| Category | Type | Steel grade | Country |
|---|---|---|---|
| Grades | Special Alloy | Q345q C | China |
Chemical composition%of the ladle analysis of gradeQ345q C
| C(％) | Si(％) | Mn(％) | P(％) | S(％) |
|---|---|---|---|---|
| ≤0.20 | ≤0.60 | 1.00～1.60 | ≤0.035 | ≤0.035 |
Mechanics performance
Steel thickness/mm: more than 16
The yield point | σ s frequency/MPa: 345
Tensile depth | σ b frequency/MPa: 510
Elongation | δ 5 frequency / (%) : 21
Impact absorption power AKV/J | testing temperature / ℃ : 0
Impact absorption power AKV/J | longitudinal frequency/J | : 34
Impact absorption power AKV/J | time frequency/J | : 34
180 ° of cold bending test | d-apex diameter, a-the following steel thickness thickness when/mm | than 16: d = 2 a
180 ° of cold bending test | d-apex diameter, a-the following steel thickness thickness when/mm | > 16: d = 3 a
| 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) |
|---|---|---|---|---|---|---|
| 857(≥) | 766(≥) | 22 | 31 | 22 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 224 |
| 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 |
|---|---|---|---|---|---|---|---|
| 229(≥) | 187(≥) | 33 | 43 | 21 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 411 | |
| Temp. °C/°F | Creep strain limit (10000h) (Rp1,0)N/mm2 | Creep rupture strength (10000h) (Rp1,0)N/mm2 | |||||
| 574 | 597 | 844 |
| 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 |