MIL S-10520D Grade 1 Structural and constructional steels

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

Data updates

Latest Update: 2016-01
Total number of updates: 1
Update History

This material has 8603 properties — only a subset is shown here.

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MIL S-10520D Grade 1 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.2000
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
≤ 0.2000
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
≤ 0.5000
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Mn
VALUE
val1
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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
P
VALUE
val1
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UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

MIL-S-10520D: 1975 / Steel, forging, for projectile stock

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MIL S-10520D Grade 1 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
7.67 — 7.86 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 8603 properties — only a subset is shown here.

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MIL S-10520D Grade 1 Heat Treatments

  • The test coupons shall be heated to a temperature above the critical range bt not over 871°C (1600°F) and held at that temperature for the length of time:
    for coupon diameter (mm) 25.4 austenitizing time 1/4-1h and tempering time is 3/4-1h
    for coupon diameter (mm)19.05-25.4, austenitizing time 1/2-1h and tempering time is 2h
    for coupon diameter (mm) 12.7-50.8, austenitizing time 2h and tempering time is 3h
    for coupon diameter (mm) 76.2, austenitizing time 2h and tempering time is 4h,
    quenched by hand by agitating laterally in still oil, and tempered for the length of time. The oil shall be a light quenching oil having a minimum Saybolt Universal viscosity of 100 seconds at 38°C (100°F). The tempering temperature of the oil shall be maintained between 38°C (100°F) and 66°C (150°F).The tempering temperature shall be at the steel producers option but in no case shall be less than 482°C (900°F).

MIL S-10520D Grade 1 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
414 — 586 MPa
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  • 1Cross References
  • 9Composition
  • 8Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • 83Joints
  • -Coatings
  • 6Dimensions
  • 1Tribology
  • 8491Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • -Total Suppliers