Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs
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F738 Class A1-70 S20300 Datasheet
SAE F738 Class A1-70 S20300| Category | Type | Grade | Microstructure | Designations |
|---|---|---|---|---|
| Grades | Stainless Steels | F738 Class A1-70 S20300 | Austenite | USA - SAE , F 738M (2002) - Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.08 | ||
| Mn | 5.00 | 6.50 | ||
| Si | - | 1.00 | ||
| P | - | 0.04 | ||
| S | 0.18 | 0.35 | ||
| Cr | 16.00 | 18.00 | ||
| Ni | 5.00 | 6.00 | ||
| Mo | - | 0.50 | ||
| Cu | 1.75 | 2.25 |
| 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) |
|---|---|---|---|---|---|---|
| 921 (≥) | 449 (≥) | 43 | 34 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 112 |
| 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 (≥) | 877 (≥) | 44 | 32 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 434 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 978 | 667 | 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 |
|---|---|---|---|
| A 581 S20300 | SAE | USA | Free-Machining Stainless Steel Wire and Wire Rods |
| A 582 S20300 | SAE | USA | Standard Specification for Free-Machining Stainless Steel Bars |
| F 837 Class A1-50 S20300 | SAE | USA | Standard Specification for Stainless Steel Socket Head Cap Screws (Metric) |
| F 837 Class A1-55 S20300 | SAE | USA | Standard Specification for Stainless Steel Socket Head Cap Screws (Metric) |
| F 837 Class A1-70 S20300 | SAE | USA | Standard Specification for Stainless Steel Socket Head Cap Screws (Metric) |
| F738 Class A1-50 S20300 | SAE | USA | Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs |
| F738 Class A1-70 S20300 | SAE | USA | Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs |
| F738 Class A1-80 S20300 | SAE | USA | Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs |
| F836 Class A1-50 S20300 | SAE | USA | Standard Specification for Style 1 Stainless Steel Metric Nuts (Metric) |
| F836 Class A1-70 S20300 | SAE | USA | Standard Specification for Style 1 Stainless Steel Metric Nuts (Metric) |
| F836 Class A1-80 S20300 | SAE | USA | Standard Specification for Style 1 Stainless Steel Metric Nuts (Metric) |
| S20300 | AISI | USA | Austenitic Chromium Manganese Nickel Copper Free Machining Stainless Steel |
| S20300 | AISI | USA | Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications |