UNI 18 NiCr 16 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels

Country / Standard: Italy / UNI

Data updates

Latest Update: 2019-07

Total number of updates: 1

Update History

This material has 26 properties — only a subset is shown here.

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UNI 18 NiCr 16 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

0.15 – 0.20

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

0.8 – 1.1

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

0.3 – 0.6

UNIT

CAS NUMBER

7439-96-5

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

UNI 6933: 1971 / Aircraft metallic materials. Case hardening alloyed steel (C 0,18%, Ni 4,0%, and Cr 0,95%)

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UNI 18 NiCr 16 Physical Properties

Temperature

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

PROPERTY / VALUE

Modulus of Elasticity

190 — 210 GPa

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Electrical Resistivity

0.18 Ω∙mm²/m

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Density

val1 kg/dm³

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Electrical Conductivity

val1 S/m

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Poisson Coefficient

val1

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This material has 26 properties — only a subset is shown here.

Unlock detailed physical values across temperatures and conditions.

UNI 18 NiCr 16 Heat Treatments

Annealing: Heat to 650 - 690°C, hold for 2 hours then slow cool in the furnace (approximately 50°C/hour) to 500°C or below, followed by cooling to room temperature in still air.Harden by oil quenching from 810 - 830°C for a minimum of 1 hour. Stress relieve by heating to 170 - 190°C for a minimum of 2 hours, followed by cooling in still air.

UNI 18 NiCr 16 Mechanical Properties

Temperature

0 - 30°C

PROPERTY / VALUE

Tensile Strength

1324 — 1520 MPa

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Brinell Hardness (HB)

≥ 241

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Elongation, A

≥ 8 %

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Impact Strength

val1 kJ/m²

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Yield Strength, Rp0.2

val1 MPa

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1Cross References

7Composition
6Mechanical Properties
10Physical Properties
1Heat Treatment
-Metallography
-Machinability

1Stress-Strain
-Formability
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