CB30 is one type 20 Chromium stainless steel Casting grade which listed in ASTM A743 standard only. UNS code is J91803. www.castingquality.com
Casting Methods in Casting Quality Industrial:
- Sand Casting
- Investment Casting (Lost Wax Casting, Precision Casting)
Equivalent Stainless Steel Grade: www.castingquality.com
Reference Casting Standards and others
ASTM A743 Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application.

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- Sand Casting
- Investment Casting
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Stainless Steel Grade | CB30 Chemical Composition / Physical Properties % (max, except where range is given) | |||||||||
Standard | Grade | Carbon | Manganese | Silicon | Sulfur | Phosphorus | Chromium | Nickel | Molybdenum | Selenium |
ASTM A743 | CB30 | 0.30 | 1.00 | 1.50 | 0.04 | 0.04 | 18.0-21.0 | 2.0 | – | – |
CB30 Heat treatment process: www.castingquality.com
Heat to 1450°F [790°C] minimum, and air cool.
Or Heat to 1450°F [790°C] minimum, and furnace cool.
CB30 Stainless Steel Mechanical Property www.castingquality.com
Stainless Steel Grade | Tensile Strength min | Yield Strength, min | Elongation, min | Reduction of Area, min | ||||
Standard | Grade | UNS | Ksi | MPa | Ksi | MPa | % | % |
ASTM A743 | CB30 | J91803 | 65 | 450 | 30 | 205 | – | – |
CB30 Typical Casting Application
- INVESTMENT CASTING
- SAND CASTING.
- LOST WAX CASTING
- PRECISION CASTING