GB 20Mn2A Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels

Country/Standard: China / GB

Data updates

Latest Update: 2015-08

Total number of updates: 1

Update History

This material has 39 properties — only a subset is shown here.

Unlock full material properties, including detailed values across temperatures and conditions.

GB 20Mn2A Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

0.020 – 0.050

UNIT

CAS NUMBER

7429-90-5

CRITERIA

VALUE

0.17 – 0.24

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

1.40 – 1.80

UNIT

CAS NUMBER

7439-96-5

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

Steels for welded round link chains for mines, GB/T 10560 / 2008

Looking for full material performance data?

GB 20Mn2A Physical Properties

Temperature

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

PROPERTY / VALUE

Modulus of Elasticity

190 — 210 GPa

Unlock full details

Density

7.67 — 7.86 kg/dm³

Unlock full details

Poisson Coefficient

val1

Unlock full details

Thermal Conductivity

val1 W/(m∙°C)

Unlock full details

This material has 39 properties — only a subset is shown here.

Unlock detailed physical values across temperatures and conditions.

GB 20Mn2A Heat Treatments

Quenching at 850°C, water cooling, tempered at 200°C, water cooling; Quenching at 880°C, water cooling, tempered at 440°C, air cooling.

GB 20Mn2A Mechanical Properties

Temperature

0 - 30°C

PROPERTY / VALUE

Yield Strength, Rp0.2

590 MPa

Unlock full details

Tensile Strength

785 MPa

Unlock full details

Elongation, A

10 %

Unlock full details

Reduction of Area

val1 %

Unlock full details

Impact Energy

val1 J

Unlock full details

Need complete mechanical properties to make the right choice?

Get complete data on strength, hardness, fatigue, and more.

Optimize material selection for your application - Book a Demo

- Cross References

6 Composition
5 Mechanical Properties
26 Physical Properties
1 Heat Treatment
- Metallography
- Machinability

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

- Joints
- Coatings
1 Dimensions
- Tribology

- Corrosion
- Ageing
- Weatherability
- Irradiation

- Total Suppliers