PROPRIETARY A2 Cast steels

Material group: Ferrous Alloys / Cast steels
Country / Standard: PROPRIETARY
Indicative price:

Data updates

Latest Update: 2025-10
Total number of updates: 1
Update History

This material has 159 properties — only a subset is shown here.

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PROPRIETARY A2 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.5 – 0.6
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.8 – 1.4
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.5 – 1.0
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

Ampco-Pittsburgh Corporation, Product Data Sheets,

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PROPRIETARY A2 Physical Properties


Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
7.72 — 8 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 159 properties — only a subset is shown here.

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PROPRIETARY A2 Heat Treatments


  • Annealing: Heat to 870°C (1600°F), hold 2 hours, then slow cool 30°C (50°F) per hour to 650°C (1200°F), then air cool or heat to 870°C (1600°F), hold 2 hours, cool to 760°C (1400°F), hold 6 hours, then air cool.
    Stress Relieving
    Annealed Parts: Heat to 650–675°C (1200–1250°F), hold 2 hours, then cool in still air. Hardened Parts: Heat to 15–25°C (25–50°F) below the original tempering temperature, hold 2 hours, then cool in still air.
    HardeningPreheat: Heat to 595–675°C (1100–1250°F), equalize. Then raise to 730–790°C (1350–1450°F), and equalize.
    Austenitize: Heat to 955–980°C (1750–1800°F), hold at temperature for 30–45 minutes.
    Quench: Air or positive pressure quench (minimum 2 bar) to below 65°C (150°F).
    Temper Temper at 205–540°C (400–1000°F). Hold for a minimum of 2 hours each time, or at least 1 hour per 25 mm of thickness. Double temper is recommended. Cool to room temperature between tempers.
    Cryogenic Treating Refrigeration after the first temper may improve long-term dimensional stability by transforming retained austenite. Any refrigeration treatment must be followed by a temper.

PROPRIETARY A2 Mechanical Properties


Temperature

PROPERTY / VALUE
Brinell Hardness (HB)
197 — 241
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Rockwell Hardness (HR)
51 — 64
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Impact Energy
39 — 56 J
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PROPRIETARY A2 International Equivalent Materials


Showing 15 of 65 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
SAE
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
AISI
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
GB
COUNTRY / PRODUCER
China
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
STANDARD
UNS
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
AFNOR NF
COUNTRY / PRODUCER
France
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
JIS
COUNTRY / PRODUCER
Japan
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
JUS
COUNTRY / PRODUCER
Yugoslavia
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
STANDARD
UNE
COUNTRY / PRODUCER
Spain
EQUIVALENCE CATEGORY
Implicit
STANDARD
UNI
COUNTRY / PRODUCER
Italy
EQUIVALENCE CATEGORY
Implicit

Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.

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  • 65Cross References

  • 11Composition
  • 18Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability

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

  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology

  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation

  • 61Total Suppliers