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Tool Steel Investment Cast Alloy Chemical Compositions

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Tool Steel Alloy Chemistry
	Carbon Min-Max	Manganese Min-Max	Phosphorous Max	Sulfur Max	Silicon Min-Max	Nickel Min-Max	Chromium Min-Max	Molybdenum Min-Max	Tungsten Min-Max	Vanadium Min-Max	Other	Melting Temperature
Alloy Type
A-2 Investment Cast	0.95-1.05	0.75	-	-	1.50	-	4.75-5.50	0.90-1.40	-	0.20-0.50 Optional	-	2500- 2600
A-6 Investment Cast	0.65-0.75	1.80-2.20	-	-	1.00	-	0.80-1.20	0.80-1.30	-	-	-	2500-2600
D-2 Investment Cast	1.40-1.60	1.00	-	-	1.50	-	11.0-13.00	0.70-1.20	-	0.40-1.00 Optional		2500-2600
L-6 Investment Cast	0.65-0.75	0.75	-	-	1.00	1.50-1.90	0.80-1.00	-	-	-		2500-2600
M2 Investment Cast	0.78-0.88	0.75	-	-	1.00	0.25	3.75-4.50	4.50-5.50	5.50-6.75	1.25-2.20		2500-2600
O-1 Investment Cast	0.85-1.00	1.00-1.30	-	-	1.50	-	0.40-1.00	-	.40-.60	0.30		2500-2600
S5 Investment Cast	0.50-0.65	0.60-1.00	-	-	1.75-2.25	-	0.35	0.20-0.80	-	0.35		2450-2550
S-7 Investment Cast	0.50-0.60	0.50-0.80	-	-	1.00	-	3.00-3.50	1.20-1.60	-	-		2450-2550

 

Tool Steel Investment Cast Alloy Hardness Values

 

Tool Steel Alloy Hardness
	Annealed with Slow Cool Max	Cycle Anneal Max	Hardened Range Rc
Alloy Type
A-2 Investment Cast	20 Rc	27 Rc	47-60
A-6 Investment Cast	100 Rb		48-59
D-2 Investment Cast		35 Rc	50-59
L-6 Investment Cast	95 Rb		39-60
M2 Investment Cast		30 Rc	61-63
O-1 Investment Cast		100 Rb	45-61
S5 Investment Cast	100 Rb		37-59
S7 Investment Cast		100 Rb	35-57

 

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.