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GB/T Q195 Details
GB/T Q195 Standard Download
| Category | Type | Grade | Designations |
|---|---|---|---|
| Grades | Structural Steel | Q195 | China - GB/T , GB/T 700-2006 - This standard applies to steel product standards, technical specifications of the finished product chemical composition of the provisions of the allowable deviation. |
| 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 |
Delivery status: hot rolling, controlled rolling, or normalizing
| 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) |
|---|---|---|---|---|---|---|
| 398 (≥) | 954 (≥) | 31 | 32 | 43 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 414 |
| 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 |
|---|---|---|---|---|---|---|---|
| 898 (≥) | 265 (≥) | 43 | 43 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 132 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 621 | 264 | 948 |
| 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 |
| 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 |