Chemical Composition of SS Buttweld Fittings
| Grade |
Mn |
Si |
C |
P |
S |
Cr |
Mo |
| Alloy Steel F1 |
0.3-0.6 |
0.5 |
0.15 max |
0.03 |
0.03 |
4-6 |
0.44-0.65 |
| Grade |
C |
P |
S |
Cr |
Mn |
Si |
Mo |
| Alloy Steel F5 |
0.15 max |
0.03 |
0.03 |
4-6 |
0.3-0.6 |
0.5 |
0.44-0.65 |
| Grade |
C |
Mn |
S |
Cr |
Si |
P |
Mo |
| Alloy Steel F9 |
0.15 max |
0.3-0.6 |
0.03 |
8 – 10 |
0.5 – 1 |
0.03 |
0.9 – 1.1 |
| Grade |
C |
Mn |
S |
Cr |
Si |
P |
Mo |
| Alloy Steel F11 |
0.15 max |
0.3-0.6 |
0.03 |
1 – 1.5 |
0.5 – 1 |
0.03 |
0.044 – 0.65 |
| Grade |
C |
Mn |
Si |
Cr |
P |
S |
Mo |
| Alloy Steel F22 |
0.05 – 0.15 |
0.3 – 0.6 |
0.5 |
0.8 – 1.25 |
0.045 |
0.03 |
0.044 – 0.65 |
| Grade |
C |
Mn |
Cr |
Si |
P |
S |
Mo |
| Alloy Steel F91 |
0.08 – 0.12 |
0.3 – 0.6 |
8.5 – 9.5 |
0.5 |
0.01 |
0.02 |
0.85 – 1.05 |
Mechanical Properties of SS Butt weld Pipe Fittings
| Grade |
Yield Strength 0.2% Proof (MPa) min |
Tensile Strength (MPa) min |
Elongation (% in 50mm) min |
| Alloy Steel F1 |
485 |
275 |
20 |
| Grade |
Yield Strength 0.2% Proof (MPa) min |
Tensile Strength (MPa) min |
Elongation (% in 50mm) min |
| Alloy Steel F5 |
485 |
275 |
20 |
| Grade |
Yield Strength 0.2% Proof (MPa) min |
Tensile Strength (MPa) min |
Elongation (% in 50mm) min |
| Alloy Steel F9 |
585 |
380 |
20 |
| Grade |
Yield Strength 0.2% Proof (MPa) min |
Tensile Strength (MPa) min |
Elongation (% in 50mm) min |
| Alloy Steel F11 |
415 |
205 |
20 |
| Grade |
Yield Strength 0.2% Proof (MPa) min |
Tensile Strength (MPa) min |
Elongation (% in 50mm) min |
| Alloy Steel F22 |
415 |
205 |
20 |
| Grade |
Yield Strength 0.2% Proof (MPa) min |
Tensile Strength (MPa) min |
Elongation (% in 50mm) min |
| Alloy Steel F91 |
585 |
415 |
20 |
