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Crosby Steam Gage & Valve Co.    Early  Alloys
	Crosby mix #1		Navy Composition Bronze
	COPPER	TIN	ZINC	LEAD	Iron
1923 Spec	88%	10.00%	2.00%	0.20%	0.06%
	Crosby mix #2		Seat Metal Bronze
	COPPER	TIN	ZINC	LEAD	NICKEL	IMPURITIES	Iron	Phosphorus
It is questioned in 1925 as to the posibility that early #2 contained 2% Nickel
1923 Spec	86%	13.25%	0.50%	0.25%	xxxxx	xxxxx	0.301% max	0.051% max
1925 Spec	86%	11.25%	0.50%	0.25%	2.00%	xxxxx	0.301% max	0.051% max
1939 Spec	84--87%	10--13%	.3--.6%	0.35% max	2% min	3% max	xxxxx	xxxxx
	Crosby mix #3		Gun Metal
	COPPER	TIN	ZINC	LEAD	NICKEL	IMPURITIES	Iron	Phosphorus
1923 Spec	89.50%	9.90%	0.60%	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
	Crosby mix #4
	COPPER	TIN	ZINC	LEAD
1923 Spec	87.70%	5.50%	2.70%	4.10%
	Crosby mix #5		Obsoleted April 16 1925  Bronze
	COPPER	TIN	ZINC	LEAD	Iron	Phosphorus
1923 Spec	86.90%	8.70%	2.20%	2.20%	0.301% max	0.051% max
1926 Spec	86.90%	8.70%	2.20%	2.20%	0.301% max	0.051% max
	Crosby mix #6
	COPPER	TIN	ZINC	LEAD	Iron	Phosphorus
1923 Spec	86.50%	7.30%	4.00%	2.20%	0.301% max	0.051% max
1926 Spec	86.50%	7.30%	4.00%	2.20%	0.301% max	0.051% max
	Crosby mix #7  NONE
	Crosby mix #8
Bronze Low Grade   (  SWEEPINGS  )
	Crosby mix #9		Solder
	COPPER	LEAD
1923 Spec	50.00%	50.00%
	Crosby mix #10		Fusible Metal Plugs
	ZINC	LEAD	Cadm.	Bismuth
1923 Spec	12.50%	25.00%	12.50%	50.00%
	Crosby mix #11		Nickel Silver
	COPPER	TIN	Zinc	LEAD	NICKEL
1923 Spec	58.60%	0.50%	20.20%	0.50%	20%
	Crosby mix #12  (Monel )
	COPPER	Alum.	NICKEL	Iron	Mang.	IMPURITIES	SILICON	Carbon
1923 Spec	28.00%	0.50% max	67.00% min	2.00%	1.00%	1.50%	xxxxx	xxxxx
1926 Spec	28.00%	0.50% max	67.00% min	2.00%	1.00%	1.50%	xxxxx	xxxxx
1939 Spec	27--30%	xxxxx	65--68%	3.5%max	1--2%	4%	1.5%max	.25max
	Crosby mix #14		Gage Case Mix
	COPPER	TIN	ZINC	LEAD	IMPURITIES	Iron	Phosphorus
1923 Spec	80.00%	1.00%	16.00%	3.00%	xxxxx	0.301% max	xxxxx
	Crosby mix #15		Nicoloy #1
	COPPER	NICKEL	Mang.	Iron
1923 Spec	26.10%	66%	3.80%	3.80%
	Crosby mix #16		Nicoloy #2
	COPPER	NICKEL	Mang.	Iron
1923 Spec	65.00%	30%	2.00%	3.00%
	Crosby mix #17		Nicoloy #3
	COPPER	TIN	ZINC	LEAD	NICKEL	IMPURITIES	Iron	Mang.
1923 Spec	70.20%	1.00%	xxxxx	xxxxx	25%	xxxxx	3.00%	0.80%
1939 Spec	65--70%	3.5--6.0%	xxxxx	xxxxx	23.0--30.0%	4%	xxxxx	xxxxx
						MAX
	Crosby mix #25		Leaded Red Brass		Became ASTM B62
	COPPER	TIN	ZINC	LEAD	NICKEL	IRON	Phosphorus
1939 Spec	83--87%	4--6%	4--6%	4--6%	1%	0.30%	0.05%
					MAX	MAX	MAX
	Crosby mix #27
	COPPER	TIN	ZINC	LEAD	NICKEL	IRON	Phosphorus
1939 Spec	84--86%	6--8%	3--5%	3--5%	1%	0.30%	0.05%
					MAX	MAX	MAX
	Crosby mix #28
1939 Spec	Forged Alloy Steel  60ksi to 85ksi Yield strength
	Crosby mix #33
	COPPER	SILICON	IRON	OTHER
1939 Spec	93.40%	4.4	2.20%	0.50%
	MAX	MAX	MAX	MAX