Alloy 20 Pipe Fittings & Flanges

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Chemical Composition of SS Buttweld Fittings

Alloy 20 Ni C Mo Mn Si Fe Cu S P Cr
32 – 38 0.02 max 2 – 3 1 – 2 0.7 max Bal 3 – 4 0.005 max 0.02 max 19 – 21
Chemical Composition of SS Forged Fittings

Grade C Mn Si S Cu Ni Cr Fe Mo P
Alloy 20 0.07 max 2.00 max 1.00 max 0.035 max 3.0-4.0 32.0-38.0 19.0-21.0 29.85 min* 2.0-3.0 0.045 max
Chemical Composition of SS Flanges

Grade C Mn Si S Cu Ni Cr Fe Mo P
Alloy 20 0.07 max 2.00 max 1.00 max 0.035 max 3.0-4.0 32.0-38.0 19.0-21.0 29.85 min* 2.0-3.0 0.045 max
Mechanical Properties of SS Butt weld Pipe Fittings

Density Melting Point Yield Strength (0.2%Offset) Tensile Strength Elongation
8.1 g/cm3 1443 °C (2430 °F) Psi – 35000 , MPa – 241 Psi – 80000 , MPa – 551 30 %
Mechanical Properties of SS Forged Fittings

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.1 g/cm3 1443 °C (2430 °F) Psi -80,000, MPa -551 Psi – 35,000, MPa – 241 30%
Mechanical Properties of SS Flanges

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.1 g/cm3 1443 °C (2430 °F) Psi -80,000, MPa -551 Psi – 35,000, MPa – 241 30%
Equivalent Grades of Alloy 20 Buttweld Fittings
STANDARD UNS WERKSTOFF NR. AFNOR EN JIS BS GOST
Alloy 20 N08020 2.4660 Z2NCUD31-20AZ NiCr20CuMo – – –
Equivalent Grades of Alloy 20 Forge Fittings
STANDARD WERKSTOFF NR. UNS AFNOR EN
Alloy 20 2.4660 N08020 Z2NCUD31-20AZ NiCr20CuMo
Equivalent Grades of Alloy 20 Flanges
STANDARD WERKSTOFF NR. UNS AFNOR EN
Alloy 20 2.4660 N08020 Z2NCUD31-20AZ NiCr20CuMo

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