PROPRIETARY APX4 Stainless steels

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

This material has 226 properties — only a subset is shown here.

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PROPRIETARY APX4 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-98-7

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-02-0

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

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PROPRIETARY APX4 Physical Properties

Temperature

0 - 30°C 30 - 100°C 100 - 300°C ≥ 300°C

PROPERTY / VALUE

Modulus of Elasticity

190 — 215 GPa

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Density

val1 kg/dm³

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Poisson Coefficient

val1

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Thermal Conductivity

19 W/(m∙°C)

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Electrical Resistivity

0.7 Ω∙mm²/m

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Electrical Conductivity

val1 S/m

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This material has 226 properties — only a subset is shown here.

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PROPRIETARY APX4 Heat Treatments

Annealed condition: heat to 680°C followed by air cooling.
Quenched and tempered (I): Oil quench from 1000/1100°C. Temper at 400°C.
Quenched and tempered (II): Oil quench from 1000/1100°C. Temper at 580°C.
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.
Temper: According to properties required.

Forging: 1100/900°C.
Quenched and tempered (I):
Oil quench: 1100°C; Tempering: 580°C.
Quenched and tempered (II):
Quenching
- Preheating to 680°C.
- Solution heat treatment 1020°C.
- Oil or gas pressure quench; Tempering at 400°C
Quenched and tempered (III):
Quenching
- Preheating to 680°C.
- Solution heat treatment 1020°C.
- Oil or gas pressure quench; Tempering at 580°C
Annealed 680°C followed by slow cooling.

PROPRIETARY APX4 Mechanical Properties

Temperature

0 - 30°C

PROPERTY / VALUE

Yield Strength, Rp0.2

val1 MPa

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Tensile Strength

1000 — 1200 MPa

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Elongation, A

16 — 18 %

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Impact Strength

val1 kJ/m²

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Brinell Hardness (HB)

270 — 320

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83 Cross References

13 Composition
22 Mechanical Properties
22 Physical Properties
3 Heat Treatment
2 Metallography
- Machinability

5 Stress-Strain
- Formability
- Fatigue
- Fracture
- Creep

- Joints
- Coatings
- Dimensions
- Tribology

- Corrosion
- Ageing
- Weatherability
- Irradiation

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