PROPRIETARY ATI 420 Stainless steels

Material group: Ferrous Alloys / Stainless steels

Country / Standard: PROPRIETARY

Data updates

Latest Update: 2021-11

Total number of updates: 3

Update History

2021-10 2016-12

This material has 50 properties — only a subset is shown here.

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

PROPRIETARY ATI 420 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

0.15 – 0.40

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

12.0 – 14.0

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

≤ 1.00

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

Allegheny Technologies Incorporated, Product Data Sheets,

Looking for full material performance data?

PROPRIETARY ATI 420 Physical Properties

Temperature

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

PROPERTY / VALUE

Modulus of Elasticity

190 — 215 GPa

Unlock full details

Electrical Resistivity

0.56 Ω∙mm²/m

Unlock full details

Density

val1 kg/dm³

Unlock full details

Heat Capacity

val1 J/(kg∙°C)

Unlock full details

Electrical Conductivity

val1 S/m

Unlock full details

Melting Temperature

val1 °C

Unlock full details

Poisson Coefficient

val1

Unlock full details

This material has 50 properties — only a subset is shown here.

Unlock detailed physical values across temperatures and conditions.

PROPRIETARY ATI 420 Heat Treatments

Annealing: heat to 843-899°C (1550-1650°F) and hold for one hour per inch of thickness and furnace cool to room temperature. A hardening heat treatment is necessary to bring out the maximum hardness and wear resistance. Since these materials absorb heat very slowly, they should be heated gradually and allowed to remain at temperature long enough to ensure uniform temperature in thick sections. For maximum strength, hardness, and corrosion resistance, slowly heat the alloy to 1010-1066°C (1850-1950°F) and quench to room temperature in oil. For thin sections, air cooling can be substituted for the oil quench. If retained austenite is known to be present after the austenitizing and quench to room temperature, additional hardening response may be achieved by sub-zero cooling to about -73°C (-100°F). The as-quenched structure of fresh martensite is quite brittle and should be stress-relieved or tempered at approximately 204-260°C (400-500°F) to restore some ductility. During tempering between approximately 149°C (300°F) and 316°C (600°F), a relaxation of the martensite structure occurs whereby the volumetric stresses associated with the formation of martensite upon quenching are relieved. As a result, the martensite still exhibits its high hardness and wear resistance properties but some ductility is introduced at the loss of a few points of hardness.

PROPRIETARY ATI 420 Mechanical Properties

Temperature

0 - 30°C

PROPERTY / VALUE

Tensile Strength

586 — 1759 MPa

Unlock full details

Elongation, A

29 %

Unlock full details

Rockwell Hardness (HR)

val1

Unlock full details

Yield Strength, Rp0.2

310 — 1311 MPa

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

Looking to compare materials and make better decisions?

Access reliable material data, compare options, and make better decisions faster.

With Total Materia, you can:

Compare materials based on real engineering data

Find equivalent materials across standards

Evaluate performance for your specific conditions

Check compliance with global regulations

See how this works for your specific application

Take a Guided Tour

-Cross References

7Composition
28Mechanical Properties
12Physical Properties
1Heat Treatment
-Metallography
-Machinability

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

-Joints
-Coatings
-Dimensions
-Tribology

-Corrosion
-Ageing
-Weatherability
-Irradiation

1Total Suppliers