Stainless Steel Forged Fitting

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Chemical Composition of SS Buttweld Fittings
Grade Mn Si C P S Cr Ni
SS 304 2 max 0.75 max 0.08 max 0.045 max 0.030 max 18 – 20 8 – 11
Grade P S C Mn Si Cr Ni
SS 304L 0.045 max 0.03 max 0.035 max 2.0 max 1.0 max 18 – 20 8 – 13
Grade Si P C Mn Mo Ni S Cr N
SS 304H 0.75 max 0.045 max 0.10 max 2.0 max – 8 – 10.5 0.03 max 18 – 20 –
Grade C Mn S Cr Si P Mo Fe Ni
SS 310 0.015 max 2.0 max 0.015 max 24.00 – 26.00 0.15 max 0.020 max 0.10 max 54.7 min 19.00 – 21.00
SS 310S 0.08 max 2.0 max 0.030 max 24.00 – 26.00 1.00 max 0.045 max 0.75 max 53.095 min 19.00 – 21.00
Grade C Mn S Cr Si P Mo Fe Ni
SS 310 0.015 max 2.0 max 0.015 max 24.00 – 26.00 0.15 max 0.020 max 0.10 max 54.7 min 19.00 – 21.00
SS 310S 0.08 max 2.0 max 0.030 max 24.00 – 26.00 1.00 max 0.045 max 0.75 max 53.095 min 19.00 – 21.00
Grade C Mn S Cr Mo Si P Ni N
SS 310H 0.04 – 0.10 2 max 0.030 max 24.00 – 26.00 – 1.00 max 0.045 max 19.00 – 21.00 53.885 min
Grade C Mn Si Cr Mo P S Ni Fe
SS 316 0.08 max 2.0 max 1.0 max 16.00 – 18.00 2.00 – 3.00 0.045 max 0.030 max 11.00 – 14.00 67.845 min
SS 316L 0.035 max 2.0 max 1.0 max 16.00 – 18.00 2.00 – 3.00 0.045 max 0.030 max 10.00 – 14.00 68.89 min
Grade C Mn Si Mo Ni P S Cr Fe
SS 316Ti 0.08 max 2.0 max 0.75 max 2.00 – 3.00 10.00 – 14.00 0.045 max 0.030 max 16.00 – 18.00 68.395 min
Grade C Mn Si Cr Mo P S Ni Fe
SS 317 0.08 max 2.0 max 1.0 max 18.00 – 20.00 3.00 – 4.00 0.045 max 0.030 max 11.00 – 15.00 57.845 min
Grade C Mn S Cr Mo Si P Ni Fe
SS 317 0.08 max 2.0 max 0.030 max 18.00 – 20.00 3.00 – 4.00 1.0 max 0.045 max 11.00 – 15.00 57.845 min
SS 317L 0.035 max 2.0 max 0.030 max 18.00 – 20.00 3.00 – 4.00 1.0 max 0.045 max 11.00 – 15.00 57.89 min
Grade C Mn Si P N Ni S Cr Ti
SS 321 0.08 max 2.0 max 1.0 max 0.045 max 0.10 max 9.00 – 12.00 0.030 max 17.00 – 19.00 5(C+N) – 0.70 max
SS 321H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.10 max 9.00 – 12.00 0.030 max 17.00 – 19.00 4(C+N) – 0.70 max
Grade Mn C Si Cb Ni P S Cr Fe
SS 347 2.0 max 0.08 max 1.0 max 10xC – 1.10 9.00 – 13.00 0.045 max 0.030 max 17.00 – 20.00 62.74 min
SS 347H 2.0 max 0.04 – 0.10 1.0 max 8xC – 1.10 9.0 -13.0 0.045 max 0.030 max 17.00 – 19.00 63.72 min
Grade C Mn Si Mo Ni P S Cr N
SS 410 0.15 max 1.00 max 1.00 max – 0.75 max 0.040 max 0.030 max 11.50 – 13.50 –
Grade C Mn P S Si Cr MO Ni N
446 Min – – – – – 23.00 – – 0.10
max 0.2 1.5 0.75 0.030 30.00 0.040 – 0.50 0.25 –
Grade C Mn Si P Mo S Cr Ni Cu
SS 904L 0.020 max 2.00 max 1.00 max 0.040 max 4.00 – 5.00 max 0.030 max 19.00 – 23.00 23.00 – 28.00 1.00 – 2.00
Mechanical Properties of SS Butt weld Pipe Fittings
Grade Tensile Strength Density Melting Point Yield Strength (0.2%Offset) Elongation
304 Psi – 75000 , MPa – 515 8.0 g/cm3 1400 °C (2550 °F) Psi – 30000 , MPa – 205 35 %
Grade Density Tensile Strength Melting Point Yield Strength (0.2%Offset) Elongation
304L 8.0 g/cm3 Psi – 75000 , MPa – 515 1400 °C (2550 °F) Psi – 30000 , MPa – 205 35 %
Grade Melting Point Tensile Strength Density Yield Strength (0.2%Offset) Elongation
304h 1400 °C (2550 °F) Psi – 75000 , MPa – 515 8.0 g/cm3 Psi – 30000 , MPa – 205 35 %
Grade Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
310/310s 7.9 g/cm3 1402 °C (2555 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 40 %
Grade Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
310/310s 7.9 g/cm3 1402 °C (2555 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 40 %
Grade Density Tensile Strength Melting Point Yield Strength (0.2%Offset) Elongation
310h 8.0 g/cm3 Psi – 75000 , MPa – 515 1400 °C (2550 °F) Psi – 30000 , MPa – 205 35 %
Grade Melting Point Density Tensile Strength Yield Strength (0.2%Offset) Elongation
SS 316 1400 °C (2550 °F) 8.0 g/cm3 Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %
SS 316L 1399 °C (2550 °F) 8.0 g/cm3 Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %
Grade Density Tensile Strength Melting Point Yield Strength (0.2%Offset) Elongation
316Ti 8.0 g/cm3 Psi – 75000 , MPa – 515 1399 °C (2550 °F) Psi – 30000 , MPa – 205 35 %
Grade Density Tensile Strength Melting Point Yield Strength (0.2%Offset) Elongation
317 7.9 g/cm3 Psi – 75000 , MPa – 515 1400 °C (2550 °F) Psi – 30000 , MPa – 205 35 %
Grade Density Tensile Strength Melting Point Yield Strength (0.2%Offset) Elongation
317L 7.9 g/cm3 Psi – 75000 , MPa – 515 1400 °C (2550 °F) Psi – 30000 , MPa – 205 35 %
Grade Density Melting Point Yield Strength (0.2%Offset) Tensile Strength Elongation
321/321h 8.0 g/cm3 1457 °C (2650 °F) Psi – 30000 , MPa – 205 Psi – 75000 , MPa – 515 35 %
Grade Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
347/347h 8.0 g/cm3 1454 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %
Grade Density Tensile Strength Melting Point Yield Strength (0.2%Offset) Elongation
410 7.8 g/cm3 Psi – 65000 , MPa – 450 1400 °C (2550 °F) Psi – 30000 , MPa – 205 20%
Grade Density Tensile Strength Melting Point Yield Strength (0.2%Offset) Elongation
446 7.5 g/cm3 Psi – 75,000 , MPa – 485 1510 °C (2750 °F) Psi – 40,000 , MPa – 275 20 %
Grade Density Melting Point Yield Strength (0.2%Offset) Tensile Strength Elongation
904L 7.95 g/cm3 1350 °C (2460 °F) Psi – 32000 , MPa – 220 Psi – 71000 , MPa – 490 35 %

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