GBT GB 85Enquiry|Print this page
| Category | Type | Steel grade | Standard | Country |
|---|---|---|---|---|
| Grades | Special Alloy | GB 85 | GBT | China |
Chemical composition%of the ladle analysis of gradeGB 85
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) |
|---|---|---|---|---|---|---|
| 0.82-0.90 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | Max 0.25 | Max 0.25 |
| 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(≥) | 439(≥) | 21 | 12 | 14 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 422 |
| 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 |
|---|---|---|---|---|---|---|---|
| 114(≥) | 275(≥) | 34 | 33 | 43 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 343 | |
| Temp. °C/°F | Creep strain limit (10000h) (Rp1,0)N/mm2 | Creep rupture strength (10000h) (Rp1,0)N/mm2 | |||||
| 411 | 687 | 147 |
| 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 |
|---|---|---|---|
| S38500 | GBT | China | Austenitic Chromium Nickel Stainless Steel (Low Work Hardening) |
| A 213 S30615 | GBT | China | Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes |
| A 240 S30615 | GBT | China | Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications |
| A 249 S30615 | GBT | China | Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes |
| A 312 S30615 | GBT | China | Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes |
| A 959 S30615 | GBT | China | Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels |
| S30615 | GBT | China | Austenitic Chromium Nickel Silicon Heat Resisting Steel |
| SA-213 S30615 | GBT | China | Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes |
| SA-240 S30615 | GBT | China | Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications |
| SA-249 S30615 | GBT | China | Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes |
| SA-312 S30615 | GBT | China | Specification for Seamless and Welded Austenitic Stainless Steel Pipes |
| 34CrAlNi7 | GBT | China | Al-alloyed nitriding steel grade for large cross-sections. Suitable for piston rods, extruders, cylinders, gear wheels, |
| 1.8550 | GBT | China | Al-alloyed nitriding steel grade for large cross-sections. Suitable for piston rods, extruders, cylinders, gear wheels, |
| V820 | GBT | China | Al-alloyed nitriding steel grade for large cross-sections. Suitable for piston rods, extruders, cylinders, gear wheels, |
| X6NiCrSiNCe35-25 | GBT | China | Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel |
| 1.4854 | GBT | China | Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel |
| NiCr22Mo9Nb | GBT | China | Heat resisting steels and nickel alloys |
| 2.4856 | GBT | China | Heat resisting steels and nickel alloys |
| NiCr23Fe | GBT | China | Heat resisting steels and nickel alloys |
| 2.4851 | GBT | China | Heat resisting steels and nickel alloys |
