Alloy 20 CB 3 Austenitic Stainless Steel

Alloy 20 CB 3 Austenitic Stainless Steel

Alloy 20 CB 3 Austenitic Stainless Steel Alloy 20 CB 3 is an austenitic stainless steel with excellent resistance to hot sulphuric acid and many other aggressive environments that would readily attack stainless steel 316. This alloy exhibits superior resistance to stress-corrosion cracking in...
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Alloy 20 CB 3 Austenitic Stainless Steel

Alloy 20 CB 3 is an austenitic stainless steel with excellent resistance to hot sulphuric acid and many other aggressive environments that would readily attack stainless steel 316. This alloy exhibits superior resistance to stress-corrosion cracking in boiling 20 to 40% sulphuric acid.


Chemical Composition

ElementMin %Max %
C0.07
Si1.00
Mn2.00
P0.045
S0.035
Cr19.0021.00
Mo2.003.00
Ni32.5038.00
Cu3.004.00
Nb8 x C1.00
Febal


SpecificationsDesignationsKey FeaturesTypical Applications

ISO 15156-3
(NACE MR 0175)

W.Nr 2.4660
UNS N08020
AWS 130

Excellent resistance to hot sulphuric acid & many other aggressive environments that would attack ST/ST 316
Superior resistance to stress corrosion cracking in boiling 20 – 40% sulphuric acid

Chemical and allied industries
Processing of synthetic rubber
High-octane gasoline
Solvents
Pharmaceuticals
Agrichemicals


Density

8.08 g/cm³

0.292 lb/in³

Melting Point

1425°C

2600°F

Coefficient of Expansion

14.69 μm/m °C (20 – 100°C)

8.16 x 10-6 in/in °F (70 – 212°F)

Modulus of Rigidity

73.6 kN/mm²

10675 ksi

Modulus of Elasticity

193 kN/mm²

27993 ksi


Heat Treatment of Finished Parts
Condition as supplied by Alloy Wire

Type

Temperature

Time (Hr)

Cooling

Time (Hr)

Cooling

Annealed or Spring Temper

Stress Relieve

250 – 530

480 – 990

1

Air


Properties
Condition

Approx. tensile strength

Approx. operating temperature

N/mm²

ksi

°C

°F

Annealed

600 – 900

87 – 131

-200 to +300

-330 to +570

Spring Temper

1200 – 1800

174 – 261

-200 to +300

-330 to +570


The above tensile strength ranges are typical. If you require different please ask.


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