PROPRIETARY ATI 303 Stainless steels

Material group: Ferrous Alloys / Stainless steels

Country / Standard: PROPRIETARY

Data updates

Latest Update: 2021-11

Total number of updates: 3

Update History

2021-03 2016-12

This material has 181 properties — only a subset is shown here.

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PROPRIETARY ATI 303 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

≤ 0.15

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

17.00 – 19.00

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

Balance

UNIT

CAS NUMBER

7439-89-6

CRITERIA

VALUE

val1

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,

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PROPRIETARY ATI 303 Physical Properties

Temperature

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

PROPERTY / VALUE

Modulus of Elasticity

190 — 215 GPa

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Electrical Resistivity

0.72 Ω∙mm²/m

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Density

val1 kg/dm³

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Electrical Conductivity

val1 S/m

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Melting Temperature

val1 °C

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Poisson Coefficient

val1

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This material has 181 properties — only a subset is shown here.

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PROPRIETARY ATI 303 Heat Treatments

Forging temperatures: Initial 1177 - 1260°C (2150 - 2300°F), final 927 - 954°C (1700 - 1750°F).
Annealing temperatures: annealed near the upper limit of the 982 - 1043°C (1800 - 2000°F) range. The material should be water quenched from the annealing temperature to prevent harmful carbide precipitation. For the same reason, heating within the 427 - 816°C (800 - 1500°F) temperature range should be avoided unless the material can be subsequently annealed.
Hardening temperature: alloy is austenitic and cannot be hardened by heat treatment.
Alloy is austenitic at all temperatures. When heated within the range 427 - 816°C (800 - 1500°F), carbides will precipitate at the grain boundaries. Upon reannealing, the carbides will be redissolved.

PROPRIETARY ATI 303 Mechanical Properties

Temperature

0 - 30°C

PROPERTY / VALUE

Tensile Strength

517 — 621 MPa

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Elongation, A

35 — 50 %

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Reduction of Area

val1 %

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Yield Strength, Rp0.2

207 — 276 MPa

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145Cross References

8Composition
4Mechanical Properties
22Physical Properties
1Heat Treatment
-Metallography
-Machinability

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

-Joints
-Coatings
-Dimensions
-Tribology

-Corrosion
-Ageing
-Weatherability
-Irradiation

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