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Martensitic Stainless Steel Alloy Investment Cast Compositions

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Martensitic Stainless Steel Alloy Chemistry
	Carbon Min-Max	Manganese Max	Silicon Min-Max	Chromium Min-Max	Nickel Min-Max	Molybdenum Min-Max	Phosphorous Max	Sulfur Min-Max	Copper Min-Max	Iron	Other	Melting Range
Alloy Type
410 (CA-15) Investment Cast	0.05-0.15	1.00	1.5 Max	11.5-14.0	1.0  Max	0.5 Max	0.04	0.04 Max	0.50 Max	Bal.		2700-2790
416 Investment Cast	0.15 Max	1.25	1.50 Max	11.5-14.0	0.50 Max	0.50 Max	0.05	0.15-0.35	0.50 Max	Bal.	Zr 0.50 Max	2700-2790
420 Investment Grade	0.15 Max	1.00	1.0 Max	12.0-14.0			0.04	0.03 Max		Bal.		2650-2750
15-5 PH Investment Cast	0.05 Max	0.60	0.50-1.00	14.00-15.50	4.20-5.00		0.025	0.025 Max	2.5-3.2	Bal.	Cb+Ta 0.15-0.30 N 0.05 Max	2560-2625
17-4 PH Investment Cast	0.06 Max	0.70	0.50-1.00	15.5-16.7	3.60-4.60		0.04	0.03 Max	2.8-3.5	Bal.	Cb+Ta 0.15-0.30 N 0.05 Max	2560-2625
440A Investment Cast	0.60-0.75	1.00	1.0 Max	16.0-18.0	0.75 Max	0.35-0.75	0.04	0.03 Max		Bal.		2500-2750
440C Investment Cast	0.95-1.20	1.00	1.0 Max	16.0-18.0	0.75 Max	0.35-0.75	0.04	0.03 Max		Bal.		2500-2700
CA-6NM Investment Cast	0.06 Max	1.00	1.00 Max	11.5-14.0	3.5-4.5	0.40-1.00	0.04	0.03		Bal.		2500-2550

 

Martensitic Stainless Steel Alloy Properties

 

Martensitic Stainless Steel Alloy Properties
	Condition	Tensile Strength		0.2% Yield Strength		% Elongation Range (2.5 cm or 1”)	Hardness Range or Max
Alloy Type		English PSI	Metric MPa	English PSI	Metric MPa
410 (CA-15) Investment Cast	Annealed Hardened	- 90-200,000	- 621-1394	- 65-160,000	- 448-1103	- 5-20	100 Rb Max 94Rb-45Rc
416 Investment Cast	Annealed Hardened	-	-	-	-	-	100Rb 94Rb-45Rc
420 Investment Cast	Annealed Hardened	- 90-220,000	- 669-1517	- 65-160,000	- 448-1103	- 1-20	25 Rc Max 25-45 Rc
15-5 PH Investment Cast	Hardened	125-170,000	862-1172	- 97-145,000	669-1000	5-15	26-38 Rc
17-4 PH Investment Cast	Annealed Hardened	- 125-190,000	- 862-1310	- 97-160,000	- 669-1103	- 5-15	36 Rc Max 30-44 Rc
440A Investment Cast	Annealed Hardened	-	-	-	-	-	30 Rc Max 35-56Rc
440C Investment Cast	Annealed Hardened	-	-	-	-	-	35 Rc Max 40-60 Rc
CA-6NM Investment Cast	Annealed Hardened	- 120-140,000	- 827-965	- 100-130,000	- 689-896	- 15-25	28 Rc Max 28-36 Rc

 

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 Alloy Designations of Martensitic Stainless Steel Alloy Investment Cast Alloys

 

Martensitic Stainless Steel Alloy Cross-Index
Alloy or Type	AMS	Other Designation
410 (CA-15) Investment Cast	5350, 5351	ASTM A743 CA-15
416 Investment Cast	5349 Type 1	IC 416
420 (CA-40) Investment Cast		ASTM A743 CA-40
15-5 PH Investment Cast	5346, 5347, 5356, 5357, 5400	ASTM A747 CB7-Cu2
17-4 PH Investment Cast	5342, 5343, 5355	ASTM A747 CB7-Cu1
440A Investment Cast		IC 440A
440C Investment Cast	5352	IC 440C
CA-6MN Investment Cast		ASTM A743 CA-6NM