UNI X3CrNiCu18-9-4 Stainless steels

Material group: Ferrous Alloys / Stainless steels

Country/Standard: Italy / UNI

Data updates

Latest Update: 2024-03

Total number of updates: 6

Update History

2019-09 2018-01 2016-11 2016-08 2015-02

This material has 652 properties — only a subset is shown here.

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UNI X3CrNiCu18-9-4 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

≤ 0.04

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

17.0 – 19.0

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

3.00 – 4.00

UNIT

CAS NUMBER

7440-50-8

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-96-5

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7727-37-9; 17778-88-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-02-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7723-14-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7704-34-9

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-21-3

EN 10088-1: 2023 / Stainless steels - Part 1: List of stainless steels

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UNI X3CrNiCu18-9-4 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

7.61 — 8.1 kg/dm³

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Poisson Coefficient

0.27 — 0.3

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This material has 652 properties — only a subset is shown here.

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UNI X3CrNiCu18-9-4 Heat Treatments

(+AT) Solution annealed: 1000-1100°C, cooled sufficiently rapid in air or water.
Hot forming: 1200-900°C, air cooling; Solution annealing (+AT): 1000-1100°C, water or air cooling. If heat treatment is carried out in a continuous furnace, the upper part of the range specified should usually be preferred, or even exceeded. The lower end of the range specified for solution annealing should be aimed at the heat treatment as part of further processing, because otherwise the mechanical properties might be affected. If the temperature of hot forming does not drop below the lower temperature for solution annealing, a temperature of 980°C is adequate as lower limit for Mo-free steels.

UNI X3CrNiCu18-9-4 Mechanical Properties

Temperature

0 - 30°C

PROPERTY / VALUE

Yield Strength, Rp0.2

val1 MPa

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Yield Strength, Rp1

val1 MPa

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Tensile Strength

450 — 2100 MPa

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Elongation, A

20 %

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Reduction of Area

val1 %

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Impact Energy

val1 J

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Brinell Hardness (HB)

≤ 215

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210 Cross References

45 Composition
86 Mechanical Properties
19 Physical Properties
3 Heat Treatment
1 Metallography
1 Machinability

13 Stress-Strain
- Formability
- Fatigue
- Fracture
- Creep

- Joints
- Coatings
156 Dimensions
- Tribology

- Corrosion
- Ageing
- Weatherability
- Irradiation

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