UNI X1CrNiMoAlTi12-9-2 Stainless steels

Material group: Ferrous Alloys / Stainless steels

Country/Standard: Italy / UNI

Data updates

Latest Update: 2022-04

Total number of updates: 4

Update History

2020-03 2015-02 2015-01

This material has 363 properties — only a subset is shown here.

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UNI X1CrNiMoAlTi12-9-2 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

0.60 – 0.80

UNIT

CAS NUMBER

7429-90-5

CRITERIA

VALUE

≤ 0.015

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

11.5 – 12.5

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-96-5

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-98-7

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

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-32-6

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

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UNI X1CrNiMoAlTi12-9-2 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 363 properties — only a subset is shown here.

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UNI X1CrNiMoAlTi12-9-2 Heat Treatments

Hot working (air cooling): 1200-800°C;
+AT - Solution annealing (air or oil cooling): 820-860°C
+P1200 - Solution annealing (air or oil cooling): 820-860°C, Precipitation hardening (air cooling): 540 to 560°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.
Solution treated and precipitation hardened: 820°C <= T <= 860°C / OQ, AQ or WQ and Cooling to T <= 20°C and 510°C <= T <= 530°C / t >= 4 h / AC

UNI X1CrNiMoAlTi12-9-2 Mechanical Properties

Temperature

≤ 0°C 0 - 30°C

PROPERTY / VALUE

Yield Strength, Rp0.2

val1 MPa

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Tensile Strength

1200 MPa

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Elongation, A

8 %

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Impact Energy

val1 J

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Brinell Hardness (HB)

360 — 363

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71 Cross References

97 Composition
91 Mechanical Properties
16 Physical Properties
8 Heat Treatment
- Metallography
- Machinability

15 Stress-Strain
- Formability
- Fatigue
- Fracture
- Creep

1 Joints
- Coatings
- Dimensions
- Tribology

- Corrosion
- Ageing
- Weatherability
- Irradiation

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