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NiCr20TiAl | 2.4631 Material Datasheet

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Material Description

Material Number Material Name Material Number (single) Standard Standard Status Country VDA 231-106 classification Application temperature [°C]
2.4631 (WL 2.4631 : 1993-08) NiCr20TiAl 2.4631 WL 2.4631 : 1993-08 Valid Germany 3.4 ≤ 815 1)
1) Remark: The high-temperature aerospace alloy NiCr20TiAl is age-hardenable, high-temperature-resistant and scale-resistant up to about 1000 °C. It is corrosion resistant, but vanadium pentoxide, sodium and sulfur compounds can cause hot gas corrosion. The material is readily formable in the solution-annealed condition; welding is possible but not common. Application: - gas turbine blades, rings and disks as well as bolts for operating temperatures up to approx. 815 °C

Chemical Composition

Al [%] B [%] C [%] Co [%] Cr [%] Cu [%] Fe [%] Mn [%] S [%] Si [%] Ti [%] Remainder
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Material Compliance

REACh RoHS
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Mechanical Properties

Semi-finished Product Condition Condition Number Nominal Size [mm] Temperature [°C] Specimen Direction Tensile Strength [MPa] Yield Strength (0.2% offset) [MPa] Elongation A [%] Hardness HB | HBW Hardness HV
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Physical Properties

Temperature [°C] Density [g/cm³] Young's Modulus [GPa] Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1] Thermal Conductivity [W/(m*K)] Specific Electrical Resistance [µΩm] Mean Specific Heat Capacity [kJ/(kg*K)] Electric Conductivity [MS/m] Magnetizeability
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Welding and Joining

Procedure Welding and Joining - Evaluation Added Materials
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Creep Rupture Behaviour

Condition Condition Number Temperature [°C] Creep Tensile Strength at 10² h [MPa] Creep Tensile Strength at 3*10² h [MPa] Creep Tensile Strength at 10³ h [MPa] Creep Tensile Strength at 10^4 h [MPa] 0.2% Creep Limit at 10² h [MPa] 0.2% Creep Limit at 3*10² h [MPa] 0.2% Creep Limit at 10³ h [MPa] 0.2% Creep Limit at 10^4 h [MPa]
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Heat Treatment

Semi-finished Product Heat Treatment Step Temperature [°C] Holding Time [h] Medium
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Formability - Bending - Folding

Semi-finished Product Condition Nominal Size [mm] Temperature [°C] Specimen Direction Bend Factor (180°)
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Cross Reference

Material Name Country Standard
NC20TA France AIR 9165 1)
HR201 Great Britain BS HR 201 1)
2HR1 Great Britain BS 2 HR 1 1)
NiCr 20 TiAl Germany DIN 17742 1)
ISO 6207 International ISO 6208 1)
Type C52 International ISO/TC 17 SC4 Doc. 706 1)
B637 UNS N07080 USA ASTM B637 1)
N07080 USA UNS 2)
2.4631.1 Germany WL 2.4631-1
2.4631.7 Germany WL 2.4631-1
1) Source: WL 2.4631-100 : 1993-08
2) Source: Metals & Alloys in the Unified Numbering System, SAE/ASTM, 11th Edition, 2008

Producer/Supplier/Trade names

Tradename Supplier
Nickelvac 80 (A) ATI Europe, Düsseldorf 1)
Superimphy 80 A Aperam Stainless Europe, Paris 1)
SY 80 A Aperam Stainless Europe, Paris 1)
PER 2 X-EA 1 AUBERT & DUVAL Deutschland GmbH, München 1)
Alloy 80 A Enpar Sonderwerkstoffe GmbH, Gummersbach 1)
NIMONIC alloy 80 A Special Metals Deutschland Ltd., Düsseldorf 1)
VDM Alloy 80 A VDM Metals GmbH, Werdohl 1)
BÖHLER L306 (LW) voestalpine BÖHLER Edelstahl GmbH & Co.KG, Kapfenberg 1)
L306 (LW) voestalpine High Perfomance Metals Deutschland GmbH, Düsseldorf 1)
Alloy 80 A ZAPP AG, Ratingen 1)
1) Source: Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach