MIL S-860B Grade A Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: United States / MIL
Indicative price:

Data updates

Latest Update: 2015-05
Total number of updates: 1
Update History

This material has 17 properties — only a subset is shown here.

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

View Complete Material Data ›
Free registration required • Instant access

Free registration required • Instant access

MIL S-860B Grade A Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.4500
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Mn
VALUE
≤ 0.9000
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
P
VALUE
≤ 0.0250
UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
Full data available with free access View Complete Material Data
UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
Full data available with free access View Complete Material Data
UNIT
%
CAS NUMBER
7440-21-3
CRITERIA
V
VALUE
val1
Full data available with free access View Complete Material Data
UNIT
%
CAS NUMBER
7440-62-2

MIL-S-860B: 1966 / Steel forgings for steam turbine rotors

Looking for full material performance data?

View Complete Material Data ›
Free registration required • Instant access

Free registration required • Instant access

MIL S-860B Grade A Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
Unlock full details
Full data available with free access View Complete Material Data
Density
7.67 — 7.86 kg/dm³
Unlock full details
Full data available with free access View Complete Material Data
Poisson Coefficient
0.27 — 0.3
Unlock full details
Full data available with free access View Complete Material Data

This material has 17 properties — only a subset is shown here.

Unlock detailed physical values across temperatures and conditions.

View Complete Material Data ›
Free registration required • Instant access

Free registration required • Instant access

MIL S-860B Grade A Heat Treatments

  • Heat treatment shall consist of quenching and tempering or normalizing and tempering. No straightening by any means is permissible after heat treatment form mechanical properties. Minimum tempering temperatures 1100°F (593°C). After heat treatment for mechanical properties and prior to heat stability testing, the forgings shall be rough machined completely and then stress relieved at a temperature 50°F (10°C) to 100°F(38°C). Below the final tempering temperature the forging shall be held at the stress relief temperature for a period of 2h per inch of maximum redial thickness.

MIL S-860B Grade A Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
≥ 517 MPa
Unlock full details
Full data available with free access View Complete Material Data
Elongation, A
≥ 22 %
Unlock full details
Full data available with free access View Complete Material Data
Impact Energy
val1
Full data available with free access View Complete Material Data
J
Unlock full details
Full data available with free access View Complete Material Data
Reduction of Area
val1
Full data available with free access View Complete Material Data
%
Unlock full details
Full data available with free access View Complete Material Data
Yield Strength, Rp0.2
≥ 276 MPa
Unlock full details
Full data available with free access View Complete Material Data

Need complete mechanical properties to make the right choice?

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

View Complete Material Data ›
Free registration required • Instant access

Free registration required • Instant access

Book A Demo

Optimize material selection for your application - Book A Demo

  • 2Cross References
  • 6Composition
  • 5Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • -Total Suppliers