Alloy casting grades and standards for number 20
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I would like to know the national standard grade and corresponding standards for alloy castings numbered 20, as well as the ASTM grade and standards
The Cr content in Alloy 20 (N08020) nickel-based alloy is typically 19.0–21.0%, while the nickel content is 32.0–38.0%. Alloy 20 (Incoloy 20) is a nickel-based alloy containing molybdenum and copper, which exhibits excellent properties for hot and cold working. Alloy 20 (N08020) is a nickel-based alloy with many excellent properties; it offers good resistance to oxidative and moderately reducing corrosion. It also possesses superior resistance to stress corrosion cracking as well as good resistance to localized corrosion, and it exhibits satisfactory corrosion resistance in many chemical process media. The standards applicable to N08020 are: ASTM B463/ASME SB463, ASTM A240/ASME SA240, ASTM B729/ASME SB729
Received, thank you. I took a look – B463 and A240 are both sheet material standards, while B729 is a tube material. Additionally, some manufacturers say it is possible to use CN7M as specified in ASTM A351; I wonder if this is appropriate
The grade is correct; you need to research the specific inspection requirements on your own