UNI 1.4594 Stainless steels

Material group: Ferrous Alloys / Stainless steels

Country/Standard: Italy / UNI

Data updates

Latest Update: 2020-03

Total number of updates: 5

Update History

2020-02 2015-02 2015-01 2014-04

This material has 238 properties — only a subset is shown here.

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UNI 1.4594 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

≤ 0.07

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

13.0 – 15.0

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

1.20 – 2.00

UNIT

CAS NUMBER

7440-50-8

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-96-5

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-98-7

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-03-1

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 1.4594 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

16 W/(m∙°C)

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Heat Capacity

val1 J/(kg∙°C)

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Electrical Resistivity

0.71 Ω∙mm²/m

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Electrical Conductivity

val1 S/m

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This material has 238 properties — only a subset is shown here.

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UNI 1.4594 Heat Treatments

Hot working (furnace or air cooling): 1150-900°C
+AT - Solution annealing (air or oil cooling): 1030-1050°C (not suitable for direct application, prompt precipitation hardening after solution annealing is recommended to avoid cracking)
+P930 Solution annealing (air cooling): 1030-1050°C, Precipitation hardening (air cooling): 620°C (4 hours)
+P1000 Solution annealing (air cooling): 1030-1050°C, Precipitation hardening (air cooling): 580°C (4 hours)
+P1070 Solution annealing (air cooling): 1030-1050°C, Precipitation hardening (air cooling): 550°C (4 hours)

Hot formed conditions:
1U - Hot formed, not heat treated, not descaled.
1C - Hot formed, heat treated, not descaled.
1E - Hot formed, heat treated, mechanically descaled.
1D - Hot formed, heat treated, pickled, coated (optional).
1X - Hot formed, heat treated, rough machined.
1G - Hot formed, heat treated, descaled, rough machined or shaved in the case of rod.
Cold processed conditions:
2H - Finishes 1E, 1D or 1X, cold processed, coated (optional).
2D - Finish 2H, heat treated, pickled and skin- passed (optional), coated (optional).
2B - Finishes 1E, 1D or 1X, cold processed, mechanically smoothed.
2G - Finishes 2H, 2D or 2B, centreless ground, mechanically smoothed (optional).
P - Finishes 2H, 2D, 2B or 2G, specular polishing.

UNI 1.4594 Mechanical Properties

Temperature

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

PROPERTY / VALUE

Yield Strength, Rp0.2

val1 MPa

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Tensile Strength

930 — 1470 MPa

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Elongation, A

10 %

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Impact Energy

val1 J

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Brinell Hardness (HB)

277 — 429

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82 Cross References

40 Composition
42 Mechanical Properties
15 Physical Properties
1 Heat Treatment
2 Metallography
- Machinability

7 Stress-Strain
- Formability
- Fatigue
- Fracture
- Creep

- Joints
- Coatings
1 Dimensions
- Tribology

- Corrosion
- Ageing
- Weatherability
- Irradiation

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