18-8 Type 304 Enquiry | Print this page
ASME 18-8 Type 304 Details
ASME 18-8 Type 304 Standard Download
| Category | Type | Grade | Microstructure | Designations | 
|---|---|---|---|---|
| Grades | Stainless Steels | 18-8 Type 304 | Austenite | USA - ASME ,    MIL-S-5059D  - Steel, corrosion resistant (18-8) plate, sheet and strip | 
| Elements | Min.(≥) | Max.(≤) | Similar | Remarks | 
|---|---|---|---|---|
| C | - | 0.08 | ||
| Si | - | 1.00 | ||
| Mn | - | 2.00 | ||
| P | - | 0.045 | ||
| S | - | 0.03 | ||
| Cr | 18.0 | 20.0 | ||
| Ni | 8.00 | 10.5 | ||
| N | - | 0.10 | 
MIL-S-5059D Steel, corrosion resistant (18-8) plate, sheet and strip; Replaced by: SAE AMS 5513; SAE AMS 5910; SAE AMS 5911; SAE AMS 5912; SAE AMS 5913, SAE AMS 5524; SAE AMS 5516; SAE AMS 5517; SAE AMS 5518; SAE AMS 5519; SAE AMS 5901; SAE AMS 5902; SAE AMS 5903; SAE AMS 5904; SAE AMS 5905; SAE AMS 5906; SAE AMS 5907
Replaced by SAE-AMS5513, SAE-AMS5910-5913, SAE-AMS5524, SAE-AMS5516-5519, SAE-AMS5901-5907
| 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) | 
|---|---|---|---|---|---|---|
| 159 (≥) | 129 (≥) | 12 | 44 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 142 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 535 (≥) | 216 (≥) | 44 | 32 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 131 | |
| Temp. °C/°F | Creep strain limit (10000h) (Rp1,0) N/mm2 | Creep rupture strength (10000h) (Rp1,0) N/mm2 | |||||
| 252 | 849 | 822 | 
| 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 | 
|---|---|---|---|
| GH3044 | GB | China | Classification and designation for superalloys and high temperature intermetallic materials | 
| 18-8 Type 304 | ASME | USA | Steel, corrosion resistant (18-8) plate, sheet and strip | 
| 304 | UNS | USA | Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings | 
| 304 | ASTM | USA | Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings | 
| 304 | ASME | USA | Steel plate, corrosion resistant, austenitic (UNS S30400, S30403, S31600, S34700, and S34800) | 
| A 167 Type 304 | SAE | USA | Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip | 
| A 182 F 304 | SAE | USA | Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service | 
| A 213 TP304 | SAE | USA | Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes | 
| 304 L | YB | USA | Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service | 
| 304L | UNS | USA | Steel, Corrosion-Resistant, Sheet, Strip, and Plate 19Cr - 9.5Ni (304L) Solution Heat Treated | 
| 304L | ASME | USA | Tubing, steel, corrosion and heat resistant, for aerospace vehicle hydraulic systems assembled by brazing | 
| A 167 Type 304L | SAE | USA | Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip | 
| A 182 F 304L | SAE | USA | Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service | 
| A 213 TP304L | SAE | USA | Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes | 
| A 240 Type 304L | SAE | USA | Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications | 
| A 249 TP304L | SAE | USA | Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes | 
| A 269 TP304L | SAE | USA | Seamless and Welded Austenitic Stainless Steel Tubing for General Service | 
| A 270 TP304L | SAE | USA | Seamless and Welded Austenitic Stainless Steel Sanitary Tubing | 
| A 276 304L | SAE | USA | Stainless Steel Bars and Shapes | 
| A 314 304L | SAE | USA | Stainless Steel Billets and Bars for Forging | 








