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GB 2Cr25Ni20 Details
GB 2Cr25Ni20 Standard Download
Category | Type | Grade | Microstructure | Designations |
---|---|---|---|---|
Grades | Stainless Steels | 2Cr25Ni20 | Austenite | China - GB , GB 13296 (2007) - Seamless stainless steel tubes for boiler and heat exchanger GB 4238 (1992) - Heat-resisting steel sheets and plates GB/T 1221 (1992) - Heat-resisting steel bars JB/T 6398 (2006) - Heavy stainless acid resistant and heat resistant steel forgings |
Elements | Min.(≥) | Max.(≤) | Similar | Remarks |
---|---|---|---|---|
C | - | 0.25 | ||
Si | - | 1.50 | ||
Mn | - | 2.00 | ||
P | - | 0.35 | ||
S | - | 0.03 | ||
Ni | 19.00 | 22.00 | ||
Cr | 24.00 | 26.00 |
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) |
---|---|---|---|---|---|---|
273 (≥) | 938 (≥) | 22 | 33 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 133 |
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 |
---|---|---|---|---|---|---|---|
443 (≥) | 885 (≥) | 21 | 13 | 43 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 443 | |
Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
672 | 159 | 257 |
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 |
---|---|---|---|
2Cr25Ni20 | GB | China | Seamless stainless steel tubes for boiler and heat exchanger |