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JIS SUS 321 HTF Details
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| Category | Type | Grade | Microstructure | Designations |
|---|---|---|---|---|
| Grades | Stainless Steels | SUS 321 HTF | Austenite | Japan - JIS , G 3467 (2011) - Steel tubes for fired heater |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.08 | ||
| Si | - | 1.00 | ||
| Mn | - | 2.00 | ||
| P | - | 0.045 | ||
| S | - | 0.03 | ||
| Cr | 17.00 | 19.00 | ||
| Ni | 9.00 | 13.00 | ||
| Mo | - | - | ||
| N | - | - | ||
| Ti | 5×C％ | - |
| 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) |
|---|---|---|---|---|---|---|
| 823 (≥) | 541 (≥) | 33 | 23 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 442 |
| 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 |
|---|---|---|---|---|---|---|---|
| 624 (≥) | 341 (≥) | 11 | 22 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 143 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 621 | 834 | 918 |
| 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 |
|---|---|---|---|
| KSUS321 | NKK | Japan | Rolled Stainless Steels |
| SUS 321 | JIS | Japan | Stainless steel bars |
| SUS 321 | JIS | Japan | Hot-rolled stainless steel plates, sheet and strip |
| SUS 321 | JIS | Japan | Cold-rolled stainless steel plate, sheet and strip |
| SUS 321 | JIS | Japan | Stainless steel wire rods |
| SUS 321 | JIS | Japan | Stainless steel wires |
| SUS 321 | JIS | Japan | Heat-resisting steel bars and wire rods |
| SUS 321 | JIS | Japan | Heat-resisting steel plate, sheet and strip |
| SUS 321 | JIS | Japan | Hot-formed stainless steel sections |
| SUS 321 | JIS | Japan | Cold finished stainless steel bars |
| SUS 321 FB | JIS | Japan | Stainless steel blooms and billets for forgings |
| SUS 321 HFB | JIS | Japan | Stainless steel blooms and billets for forgings |
| SUS 321 HTB | JIS | Japan | Stainless steel boiler and heat exchanger tubes |
| SUS 321 HTF | JIS | Japan | Steel tubes for fired heater |
| SUS 321 HTP | JIS | Japan | Stainless steel pipes |
| SUS 321 TB | JIS | Japan | Stainless steel boiler and heat exchanger tubes |
| SUS 321 TF | JIS | Japan | Steel tubes for fired heater |
| SUS 321 TKA | JIS | Japan | Stainless steel pipes for machine and structural purposes |
| SUS 321 TP | JIS | Japan | Stainless steel pipes |
| SUS 321 TPY | JIS | Japan | Large diameter welded stainless steel pipes |