APX4 (PROPRIETARY) Material Properties

Alternative designations: X4CrNiMo16-5-1
Material group: Ferrous Alloys / Stainless steels
Country/Standard: PROPRIETARY

Data updates

Latest Update: 2023-03
Total number of updates: 3
Update History:
2018-04 2014-06

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Yield Strength, Rp0.2 val1
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MPa view details
Tensile Strength 1000 — 1200 MPa view details
Elongation, A 16 — 18 % view details
Impact Strength val1
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kJ/m² view details
Brinell Hardness (HB) 270 — 320 view details
Yield Strength, Rp0.2 val1
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ksi view details
Tensile Strength 145 — 174 ksi view details
Elongation, A 16 — 18 % view details
Impact Strength val1
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ft·lb/in² view details
Brinell Hardness (HB) 270 — 320 view details

Physical Properties

Temperature

0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Modulus of Elasticity 190 — 215 GPa view details
Density val1
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kg/dm³ view details
Poisson Coefficient val1
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view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Thermal Conductivity 19 W/(m∙°C) view details
Electrical Resistivity 0.7 Ω∙mm²/m view details
Electrical Resistivity val1
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Ω∙mm²/m view details
Electrical Conductivity val1
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S/m view details
Electrical Conductivity val1
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S/m view details
Modulus of Elasticity 27.6 E+03 — 31.2 E+03 ksi view details
Density val1
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lb/in³ view details
Poisson Coefficient val1
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view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°F view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°F view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°F view details
Thermal Conductivity 11 BTU/(h∙ft∙°F) view details
Electrical Resistivity 421 Ω∙circular·mil/ft view details
Electrical Resistivity val1
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Ω∙circular·mil/ft view details
Electrical Conductivity val1
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S/in view details
Electrical Conductivity val1
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S/in view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
val1
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UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
val1
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UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0

Aubert & Duval, Product Data Sheets / Available at: www.aubertduval.com, visited 2018

Heat Treatments

  • Annealed condition: heat to 680°C followed by air cooling.<br />Quenched and tempered (I): Oil quench from 1000/1100°C. Temper at 400°C.<br />Quenched and tempered (II): Oil quench from 1000/1100°C. Temper at 580°C.<br />Harden: Heat to 1000/1100°C. Oil or water quench, gas pressure quenching is an option depending on the shape. It is recommended that heating should take place in an inert atmosphere.<br />Temper: According to properties required.<br /><br />Forging: 1100/900°C.
  • Quenched and tempered (I):<br>Oil quench: 1100°C; Tempering: 580°C.<br>Quenched and tempered (II):<br>Quenching <br>- Preheating to 680°C.<br>- Solution heat treatment 1020°C.<br>- Oil or gas pressure quench; Tempering at 400°C<br>Quenched and tempered (III): <br>Quenching <br>- Preheating to 680°C.<br>- Solution heat treatment 1020°C.<br>- Oil or gas pressure quench; Tempering at 580°C<BR>Annealed 680°C followed by slow cooling.