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KS STS304LTB Details
Stainless steel for boiler and heat exchanger tubes
KS STS304LTB Standard Download
STS304LTB Datasheet
KS STS304LTB| Category | Type | Grade | Microstructure | Designations |
|---|---|---|---|---|
| Grades | Stainless Steels | STS304LTB | 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 | 9.00 | 13.00 | ||
| Mo | - | - | ||
| N | - | - |
| 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) |
|---|---|---|---|---|---|---|
| 278 (≥) | 629 (≥) | 23 | 32 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 133 |
| 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 |
|---|---|---|---|---|---|---|---|
| 881 (≥) | 755 (≥) | 43 | 32 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 122 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 991 | 729 | 419 |
| 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 |
|---|---|---|---|
| STS304L | KS | Korea | Special alloys steel for chemical plant |
| STS304LTB | KS | Korea | Stainless steel for boiler and heat exchanger tubes |
| STS304LTBS | KS | Korea | Stainless steel sanitary pipes |
| STS304LTPY | KS | Korea | Large diameter welded stainless steel pipes |
| STS304LWSA | KS | Korea | Stainless steel wires for cold heading and cold forging |
| STS304LWSB | KS | Korea | Stainless steel wires for cold heading and cold forging |
| STS304LCA | KS | Korea | Cold - rolled formed stainless steel equal leg angles |
| STS304LFB | KS | Korea | Stainless steel blooms and billets for forgings |
| STS304LTP | KS | Korea | Stainless lined steel pipe |
| STS304LN | KS | Korea | Stainless steel bars |