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KS STS317LTB Details
Stainless steel for boiler and heat exchanger tubes
KS STS317LTB Standard Download
STS317LTB Datasheet
KS STS317LTB| Category | Type | Grade | Microstructure | Designations |
|---|---|---|---|---|
| Grades | Stainless Steels | STS317LTB | Austenite | Korea - KS , D 3577 (2007) - Stainless steel for boiler and heat exchanger tubes |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.03 | ||
| Si | - | 1.00 | ||
| Mn | - | 2.00 | ||
| P | - | 0.045 | ||
| S | - | 0.030 | ||
| Cr | 18.00 | 20.00 | ||
| Ni | 11.00 | 15.00 | ||
| Mo | 3.00 | 4.00 | ||
| N | 0.10 | 0.22 |
| 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) |
|---|---|---|---|---|---|---|
| 655 (≥) | 781 (≥) | 14 | 23 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 234 |
| 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 |
|---|---|---|---|---|---|---|---|
| 977 (≥) | 862 (≥) | 31 | 23 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 331 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 122 | 245 | 437 |
| 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 |
|---|---|---|---|
| STS317L | KS | Korea | Stainless steel bars |
| STS317LN | KS | Korea | Stainless steel bars |
| STS317LTB | KS | Korea | Stainless steel for boiler and heat exchanger tubes |
| STS317LTPY | KS | Korea | Large diameter welded stainless steel pipes |
| STS317LFB | KS | Korea | Stainless steel blooms and billets for forgings |
| STS317LTP | KS | Korea | Stainless lined steel pipe |