DIN 1.4901 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels

Country/Standard: Germany / DIN

Data updates

Latest Update: 2022-01

Total number of updates: 5

Update History

2021-06 2020-03 2018-10 2015-06

This material has 508 properties — only a subset is shown here.

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DIN 1.4901 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

≤ 0.040

UNIT

CAS NUMBER

7429-90-5

CRITERIA

VALUE

0.001 – 0.006

UNIT

CAS NUMBER

7440-42-8

CRITERIA

VALUE

0.07 – 0.13

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

val1

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

7440-03-1

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

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-62-2

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-33-7

WB 552/3: 2025 / Heat-resistant steel, X10CrWMoVNb9-2, material No. 1.4901; bar, forging

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DIN 1.4901 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

val1 GPa

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Density

7.67 — 7.86 kg/dm³

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Poisson Coefficient

val1

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Service Temperature

-10 — 650 °C

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This material has 508 properties — only a subset is shown here.

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DIN 1.4901 Heat Treatments

Quenching and tempering: Hardened at 1040-1090°C, quenched in oil (for wt < 80 mm, cooling in air or controlled atmosphere can be performed).
Tempered at 750-780°C, held 2 min per mm thickness, minimum 60 min, cooled in air.
Hardening at 1040-1090°C, cooled in air (for wt > 80 mm, cooling can be performed in oil or similar suspensions or water spray)
Tempering at 740-780°C, hold at least 60 min (the holding period begins when the temperature in the cross section is reached), cooled in air
Tempering after welding at 740-780°C, holding time:
for s ≤ 8 mm is 30 min
for 8 < s ≤ 30 mm is 60 min
for s > 30 mm is 2 min/mm, cooled in air. The holding time starts when the temperature in the cross-section is reached.
Stress relieving after cold forming at 700-760°C, hold 2 minutes per mm thickness, at least 60 minutes, cooled in air. The holding time starts when the temperature in the cross-section is reached.

Hot forming should be carried out in the range 1100-850°C. After hot forming, renewed quenching and tempering is required.

DIN 1.4901 Mechanical Properties

Temperature

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

PROPERTY / VALUE

Yield Strength, Rp0.2

440 MPa

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Tensile Strength

620 — 850 MPa

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Elongation, A

17 %

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Impact Energy

val1 J

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65 Cross References

60 Composition
91 Mechanical Properties
41 Physical Properties
6 Heat Treatment
- Metallography
- Machinability

- Stress-Strain
- Formability
- Fatigue
- Fracture
2 Creep

14 Joints
- Coatings
174 Dimensions
- Tribology

- Corrosion
9 Ageing
- Weatherability
- Irradiation

46 Total Suppliers