MSRR 8501

A nickel silicon bronze with a combination of high strength and good electrical and thermal conductivity. For general bars and forgings.

National Specification

Material may also be released to Customer Specifications, subject to enquiry.

ASTM	UNS	SEA AMS	British Standard	Other
-	-	-	DTD 498	-

Technical Data

Chemical Composition.

	Cu	Ni	Si	Mn
Min %	-	2.3	0.4	0.05
Max %	Bal	3.5	0.8	0.3

Typical Tensile Properties at Ambient Temperature.

Annealed Size	0.2% PS MPa min.	UTS MPa min.	Elongation % min.
Bars/Finished Parts	385	555	10
Forging Stock	385	555	10
Forgings/Finished Parts	385	555	10

Physical Properties.


Density	8870 kg/m3
Electrical Conductivity	40% IACS
Electrical Resistivity	0.043μΩm
Thermal Conductivity at 20°C	190 W/(mk)
Thermal Expansion 20 - 400°C	16 X 10-6 / °K

Heat Treatment
Solution treated at 770 - 800°C followed by water or oil quench.Precipitation treated at 500°C for 4 hours followed by air cooling.

Machining
Machining is best performed using a carbide tool with water soluble lubricant. A chip breaker may be found necessary for efficient operation.

Condition	Tool Type	Cut Depth	Speed m/min.	Feed mm/rev.
Annealed	Carbide	2.0 roughing	30 – 60	0.25
Annealed	Carbide	0.3 finishing	120 – 180	0.12

The data presented herein are not intended for specification purposes, and should be considered as typical or average values only. Applications suggested for the materials described herein are made solely to allow the reader to make his own evaluation, and are not to be construed as warranties, either limited or express, or fitness for these or other applications. Materials must be tested under actual service conditions to determine their suitability for a particular purpose.