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Ferritic Stainless Steel Investment Cast Alloy Chemical Compositions

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Ferritic Stainless Steel Alloy Chemistry
	Carbon Max	Manganese Max	Silicon Max	Chromium Min-Max	Nickel Max	Molybdenum Max	Phosphorous Max	Sulfur Max	Copper Max	Iron	Other	Melting Range
Alloy Type
409/Nb Investment Cast	0.16	1.5	2.0	10.5-11.75	0.50		0.045	0.045		Bal.	Cb (Nb) 8*C Min 1.00 Max	2550-2650
442 (CB-30) Investment Cast	0.30	1.00	1.50	18.0-22.0	2.0		0.04	0.04		Bal.		2650-2750
446 (CC-50) Investment Cast	0.50	1.00	1.50	26.0-30.0	4.0		0.04	0.04		Bal.		2650-2750

 

Ferritic Stainless Steel Investment Cast Alloy Properties

 

Ferritic Stainless Steel Alloy Properties
	Condition	Tensile Strength		0.2% Yield Strength		% Elongation Range (2.5 cm or 1”)	Hardness Max
Alloy Type		English PSI	Metric MPa	English PSI	Metric MPa
409/Nb Investment Cast	Annealed	-	-	-	-	-	100 Rb
442 (CB-30) Investment Cast	Annealed	65-100,000	448-689	30-70.000	207-483	15-25	241 BHN Max
446 (CC-50) Investment cast	Annealed	55-95,000	379-655	-	-	-	241 BHN Max

 

Mechanical Property values are for information only. They are determined from test bars and do not necessarily apply to castings. Any requirements for mechanical properties that are beyond the above information must be discussed with and agreed to by WPCC.

Cross-Index of Various Alloy Designations of Ferritic Stainless Steel Investment Cast Alloys

 

Ferritic Stainless Steel Alloy Cross-Index
Alloy or Type	AMS	Other Designation
409/Nb Investment Cast
442 (CB-30) Investment Cast		ASTM A743 CB-30
446 (CC-50) Investment cast		ASTM A743 CC-50