DIN 1.6368 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels

Country/Standard: Germany / DIN

Data updates

Latest Update: 2025-08

Total number of updates: 10

Update History

2024-10 2022-08 2021-09 2020-03 2019-09 2018-12 2018-10 2015-06 2014-04

This material has 599 properties — only a subset is shown here.

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DIN 1.6368 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

≥ 0.015

UNIT

CAS NUMBER

7429-90-5

CRITERIA

VALUE

≤ 0.17

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

≤ 0.30

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

7440-03-1

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

SEW 028: 1993 / Non-alloy and alloy steels with specified properties at moderately elevated and elevated temperatures for pressure vessel purposes; Technical delivery conditions for flat products

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DIN 1.6368 Physical Properties

Temperature

≤ 0°C 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

val1 GPa

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Density

val1 kg/dm³

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Poisson Coefficient

val1

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Coefficient of Thermal Expansion (CTE)

val1 10^-6/°C

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Thermal Conductivity

38.6 W/(m∙°C)

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Heat Capacity

val1 J/(kg∙°C)

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Electrical Resistivity

0.27 Ω∙mm²/m

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Electrical Conductivity

val1 S/m

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This material has 599 properties — only a subset is shown here.

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DIN 1.6368 Heat Treatments

Quenching and tempering: Normalizing or hardening at 880-960°C. After reaching the temperature in the entire cross-section, air cooled. For product with t > 150 mm (if necessary > 100 mm) quenched in water or oil.
Tempered at 580-680°C, held for minimum 30 minutes, cooled in air.
Normalizing and tempering (+NT): 880-980°C, air cooling. Tempering: 580-680°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 1.6368 Mechanical Properties

Temperature

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

PROPERTY / VALUE

Yield Strength, Rp0.2

400 MPa

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Tensile Strength

580 — 780 MPa

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Elongation, A

16 %

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Impact Energy

val1 J

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80 Cross References

48 Composition
200 Mechanical Properties
40 Physical Properties
7 Heat Treatment
- Metallography
- Machinability

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

30 Joints
- Coatings
141 Dimensions
- Tribology

- Corrosion
- Ageing
- Weatherability
- Irradiation

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