ABS AB/A8 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels

Country / Standard: United States / ABS

Indicative price:

Data updates

Latest Update: 2021-10

Total number of updates: 1

Update History

This material has 28 properties — only a subset is shown here.

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

ABS AB/A8 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

≤ 0.28

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

≤ 0.75

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

0.20 – 0.60

UNIT

CAS NUMBER

7439-96-5

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-98-7

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

Rules for Materials and Welding, Part 2; Chapter 3 Section 7; Materials for Machinery, Boilers, Pressure Vessels, and Piping; Steel Machinery Forgings, American Bureau of Shipping, 2021

Looking for full material performance data?

ABS AB/A8 Physical Properties

Temperature

0 - 30°C

PROPERTY / VALUE

Modulus of Elasticity

190 — 210 GPa

Unlock full details

Density

7.67 — 7.86 kg/dm³

Unlock full details

Poisson Coefficient

0.27 — 0.3

Unlock full details

This material has 28 properties — only a subset is shown here.

Unlock detailed physical values across temperatures and conditions.

ABS AB/A8 Heat Treatments

Forgings are to be double normalized and tempered.
Cooling prior to heat treatment: After forging and before reheating for heat treatment, the forgings are allowed to cool in a manner to prevent injury and to accomplish transformation.
Annealing: The forgings are to be reheated to and held at the proper austenitizing temperature for a sufficient time to effect the desired transformation and then be allowed to cool slowly and evenly in the furnace until the temperature has fallen to about 455°C (850°F) or lower.
Normalizing: The forgings are to be reheated to and held at the proper temperature above the transformation range for a sufficient time to effect the desired transformation and then withdrawn from the furnace and allowed to cool in air. Water sprays and air blasts may be specially approved for use on forgings to achieve more rapid cooling. The faster cooling rates are to be agreed to by the purchaser.
Tempering: The forgings are to be reheated to and held at the proper temperature, which will be below the transformation range, but above 580°C (1075°F), and then to be cooled at a rate not exceeding 55°C (100°F)/h until temperature below 315°C (600°F) is reached.
Stress Relieving: Where heat treatment for mechanical properties is carried out before final machining, the forgings are to be stress relieved at a temperature not more than 55°C (100°F) below the previous tempering temperature, but in no case less than 550°C (1025°F). The cooling rate is not to exceed 55°C (100°F)/h until a temperature below 315°C (600°F) is reached. Stress relieving may be used to augment tempering, in order to make final adjustments to the mechanical properties. If the stress relief temperature is within 14°C (25°F) of the final tempering temperature or higher for quenched and tempered steel, mechanical tests are to be made to assure that these temperatures have not adversely affected the mechanical properties of the steel.
Retreatment: The manufacturer may re-heat treat the forging, but not more than three additional times.

ABS AB/A8 Mechanical Properties

Temperature

0 - 30°C

PROPERTY / VALUE

Tensile Strength

≥ 725 MPa

Unlock full details

Brinell Hardness (HB)

223 — 262

Unlock full details

Elongation, A

≥ 16 %

Unlock full details

Reduction of Area

val1 %

Unlock full details

Yield Strength, Rp0.2

val1 MPa

Unlock full details

Need complete mechanical properties to make the right choice?

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

ABS AB/A8 International Equivalent Materials

Showing 2 of 6 results.

MATERIAL

STANDARD

COUNTRY / PRODUCER

EQUIVALENCE CATEGORY

MATERIAL

A 470 Class 4

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

A 470 Grade B Class 4

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Implicit

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

Need the full list of 6 international equivalents?

See all 6 equivalent grades with detailed mapping by standard, producer and equivalence category.

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

6Cross References

9Composition
9Mechanical Properties
3Physical Properties
1Heat Treatment
-Metallography
-Machinability

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

-Joints
-Coatings
-Dimensions
-Tribology

-Corrosion
-Ageing
-Weatherability
-Irradiation

-Total Suppliers