DIN 1.7392 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels

Country/Standard: Germany / DIN

Data updates

Latest Update: 2025-02

Total number of updates: 2

Update History

2022-04

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DIN 1.7392 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

≤ 0.04

UNIT

CAS NUMBER

7429-90-5

CRITERIA

VALUE

0.08 – 0.12

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

8 – 9.5

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

val1

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

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

WB 588: 2021 / Heat-resistant steel T/P921 X10CrSiCuMoNi9-2-1, Material No. 1.7392 Seamless tube

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DIN 1.7392 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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Dynamic Modulus of Elasticity

212 GPa

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Density

7.67 — 7.86 kg/dm³

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Poisson Coefficient

val1

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This material has 161 properties — only a subset is shown here.

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DIN 1.7392 Heat Treatments

Hardening: Heating at 910-950°C, cooling in air.
Tempering: Heating at 730-770°C, holding for at least 60 minutes, cooling in air.

Annealing temperature after welding and cold forming: 710 to 770°C. For wt ≤ 8 mm, hold at least 30 min, for 8 < wt ≤ 25 mm, hold at least 60 min. Cooling in air.

Hot forming operations should be carried out in the range 1200 °C to 850°C. Hot forming operations such as forging and upsetting are suitably carried out between 1200°C and 950°C. After forming, cooling can be performed in still air.
Normalizing and tempering (+NT): 910-950°C, air cooling. Tempering: 730-770°C, air cooling. It may be necessary in the case of wall thickness T above 10 mm or T/D > 0.15 to apply quenching and tempering in order to achieve the intended structure and material properties.

DIN 1.7392 Mechanical Properties

Temperature

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

PROPERTY / VALUE

Yield Strength, Rp0.2

580 MPa

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Tensile Strength

750 — 950 MPa

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Elongation, A

18 %

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Impact Energy

val1 J

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Vickers Hardness (HV)

val1

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45 Cross References

22 Composition
54 Mechanical Properties
22 Physical Properties
2 Heat Treatment
- Metallography
- Machinability

- Stress-Strain
- Formability
- Fatigue
- Fracture
1 Creep

- Joints
- Coatings
15 Dimensions
- Tribology

- Corrosion
- Ageing
- Weatherability
- Irradiation

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