| Product Name: | Stainless Steel Coupling | Standard: | ASTM A182， ASME SA182 |
|---|---|---|---|
| Material Grade: | F304， F304L | Size: | Customized Size， 1/8′-4′ |
| Pressure Rating: | 2000LBS， 3000LBS， 6000LBS， 9000LBS | Type: | Socket Weld Coupling， Threaded Coupling， Half Coupling， Full Coupling |
| Surface Treatment: | Galvanized， Polishing， Sand Blasting | Applications: | Decoration，Construction，Boiler，Oil And Gas，Electric |
| High Light: | B16.11 Stainless Steel Coupling， A182 Stainless Steel Coupling， F304 F304L Stainless Steel Coupling | ||
ASTM A182 F304， F304L Stainless Steel Socket Weld Full Coupling High Pressure Fittings B16.11
Grade F304L(Austenitic Stainless Steel)
UNS code: S30403
Chemical composition， % :
C: ≤0.030
Mn: ≤2.00
P: ≤0.045
S: ≤0.030
Si: ≤1.00
Ni: 8.0-13.0
Cr: 18.0-20.0
N: ≤0.10
Heat treatment:
Solution treatment plus quenching: ≥1040 °C
Cooling medium: liquid
Quench and cool to below 260℃
Tensile properties:
Tensile strength: 485MPa
Yield strength: 170MPa
Elongation 2 in. or 50 mm (or 4D)， %: 30
Section shrinkage， %: 50
Equivalent Grades:
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| F304 | 1.4301 | S30400 | SUS 304 | 304S31 | 08Х18Н10 | Z7CN18‐09 | X5CrNi18-10 |
| F304L | 1.4306 / 1.4307 | S30403 | SUS 304L | 3304S11 | 03Х18Н11 | Z3CN18‐10 | X2CrNi18-9 / X2CrNi19-11 |
Chemical Composition:
| Steel Grade | C(Max) | Si(Max) | Mn(Max) | P(Max) | S(Max) | Ni | Cr | N |
| F304 | 0.08 | 0.75 | 2.00 | 0.045 | 0.03 | 8.0–10.5 | 18.0–20.0 | 0.1 |
| F304L | 0.03 | 0.75 | 2.00 | 0.045 | 0.03 | 8.0–12.0 | 18.0–20.0 | 0.1 |
Mechanical Properties:
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| F304 | 515 | 205 | 40 | 92 | 201 |
| F304L | 485 | 170 | 40 | 92 | 201 |
Manufacturing Standards:
| ASME | ASME 16.11， MSS SP-79， MSS SP-95， 83， 95， 97， BS 3799 |
| DIN | DIN2605， DIN2615， DIN2616， DIN2617， DIN28011 |
| EN | EN10253-1， EN10253-2 |
