C93700 Tin Bronze (CDA 937)

C93700 (CDA 937) is a high-strength bronze casting alloy from India, known for its thermal conductivity, ideal for heat exchangers and thermal applications. Conex Metals is your trusted source for C93700 Tin Bronze, offering a range of product forms, including solids, plate, rectangles, and castings. We maintain a select inventory of bridge plate (per ASTM B22) in various sizes, with some shapes and sizes available off-the-shelf. For other sizes, we offer made-to-order castings tailored to your specific needs.

Please note that the casting method will depend on your size, specification, and desired quantity. Our expert team will work closely with you to determine the optimal casting method for your application.

C93700 Tin Bronze is a versatile alloy used in various demanding applications, including:

– Bearings
– Bearing plates
– Marine: Large bearings for ships
– Pumps
– Pressure-tight castings
– Fasteners: Washers for engines
– Impellers
– High-speed, heavy-load bearings
– Industrial: Crankshafts, bushings, machine parts
– Parts for steel mill maintenance
– Bushings for high-speed and heavy-pressure applications

Chemical Composition:
%max., unless shown as range or min.)

Chemical Composition
	Cu	Al	Si	S	Sn	Zn	Sb	Fe(1)	Pb	Ni(2)	P(3)
Min./Max.	78.0-82.0	0.005	0.005	0.08	9.0-11.0	0.8	0.5	0.7	8.0-11.0	0.5	0.1
Nominal	80	-	-	-	10	-	-	-	9.5	-	-

(1) Fe shall be .35% max., when used for steel-backed
(2) Ni value includes Co.
(3) For continuous castings, P shall be 1.5%, max.
Note: Cu + Sum of Named Elements, 99.0% min.

Mechanical Properties:
(measured at room temperature, 68 F (20 C)

Mechanical Properties
Temper	Section Size	Cold Work	Typ/ Min	Temp	Tensile Strength	El	Rockwell Hardness				Vickens Hard.	Brinell Hard.		Shear Strength	Fatigue Strength*	Izod Impact Strength	Yield Strength (0.5% ext. under load)	Yield Strength (0.2% offset)	Yield Strength (0.05% offset)
	in.	%		F	ksi	%	B	C	F	30T	500	500	3000	ksi	ksi	ft-lb	ksi	ksi	ksi
	mm.			C	MPa									MPa	MPa	J	MPa	MPa	MPa
As Sand Cast
M01	0	0	TYP	68	35	20	-	-	-	-	-	60	-	18	13	5	18	16	-
	0			20	241	20	-	-	-	-	-	60	-	124	90	7	124	110	-
As Centrifugal Cast
M02	0	0	SMIN	68	30	15	-	-	-	-	-	-	-	-	-	0	12	-	-
	0			20	207	15	-	-	-	-	-	-	-	-	-	0	83	-	-
As Continuous Cast
M07	0	0	SMIN	68	35	6	-	-	-	-	-	-	-	-	-	0	20	-	-
	0			20	241	6	-	-	-	-	-	-	-	-	-	0	138	-	-
As Sand Cast
M01	0	0	SMIN	68	30	15	-	-	-	-	-	-	-	-	-	0	12	-	-
	0			20	207	15	-	-	-	-	-	-	-	-	-	0	83	-	-

*Fatigue Strength: 100 x 10 ⁶cycles,
unless indicated as [N]X 10⁶.

Applicable Specifications:

Applicable Specifications
Product	Specification
Ingot	ASTM B30
Sand	AMS 4842
	ASME SB584
	ASTM B763, B66, B584, B22
	SAE J461, J462
Bearings	AMS 4827
Centrifugal	AMS 4842
	ASTM B271
	SAE J462, J461
Continuous	ASTM B505
	SAE J461, J462