Rene 41 is an age hardenable nickel base alloy that has very high strength at elevated temperatures, particularly within the range of 650 – 980 °C (1200 – 1800 °F).

Required mechanical properties can be tailored by selection of various combinations of cold work and/or heat treatments. Rene 41 also has good oxidation resistance.

Size

Diameter: 0.1 - 40mm

Shape: round, square, flat, special shaped

Key Features

Very high strength at elevated temperatures.
Good oxidation resistance.
Age hardenable.
High temperature dynamic applications.

Typical Applications

After burner parts

Turbine castings

Bolts

Other fasteners

Designations

W.Nr 2.4973

UNS N07041

AWS 120

Specifications

AMS 5545

AMS 5713

AMS 5800

AMS 5712

GE C50T71

Chemical Composition

Element	Min %	Max %
C	–	0.12
Mn	–	0.1
Si	–	0.5
S	–	0.015
Cr	18	20
Co	10	12
Mo	9	10.5
Ti	3	3.3
Al	1.4	1.6
B	0.003	0.01
Fe	–	5
Ni	bal

Physical Properties

Density	Melting Point	Coefficient of Expansion	Modulus of Rigidity	Modulus of Elasticity
8.25 g/cm³	1345 °C	13.6 μm/m °C (20 – 100 °C)	83.2 kN/mm²	218.0 kN/mm²
0.298 lb/in³	2450 °F	7.41 x 10-6 in/in °F (70 – 212 °F)	12067 ksi	31619 ksi

Heat treatment

Condition	Type	Temperature	Time	Cooling
Annealed	Age Harden	760 °C (1400 °F)	16 Hr	Air
Spring Temper	Solution Anneal Age Harden	1065 °C (1950 °F) 760 °C (1400 °F)	4 Hr 16 Hr	Air Air

Mechanical Properties

Annealed	Approx. tensile strength	<1100 N/mm²	<159 ksi
Annealed	Approx. operating temperature depending on load^^ and environment	–	–
Annealed + Aged	Approx. tensile strength	1350 – 1550 N/mm²	196 – 225 ksi
Annealed + Aged	Approx. operating temperature depending on load^^ and environment	up to +550 °C	up to +1020 °F
Spring Temper	Approx. tensile strength	1400 – 1800 N/mm²	203 – 261 ksi
Spring Temper	Approx. operating temperature depending on load^^ and environment	–	–
Spring Temper + Annealed + Aged	Approx. tensile strength	1350 – 1550 N/mm²	196 – 225 ksi
Spring Temper + Annealed + Aged	Approx. operating temperature depending on load^^ and environment	up to +550 °C	up to +1020 °F
Spring Temper + Aged	Approx. tensile strength	1600 – 2000 N/mm²	232 – 290 ksi
Spring Temper + Aged	Approx. operating temperature depending on load^^ and environment	up to +550 °C	up to +1020 °F

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