PROPRIETARY Unisteel 8620 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: PROPRIETARY
Indicative price:

Data updates

Latest Update: 2018-06
Total number of updates: 1
Update History

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PROPRIETARY Unisteel 8620 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.18 – 0.23
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.40 – 0.60
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.70 – 0.90
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

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PROPRIETARY Unisteel 8620 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Thermal Conductivity
26 W/(m∙°C)
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Density
7.67 — 7.86 kg/dm³
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Poisson Coefficient
val1
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This material has 8761 properties — only a subset is shown here.

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PROPRIETARY Unisteel 8620 Heat Treatments

  • May be hardened by heating to 1500°F followed by a water quench. Carburize at 1650 to 1700°F in an appropriate carburizing medium and oil quench to harden. Improved carburized case and core properties can be obtained by furnace cooling from carburizing at 1650 - 1700 °F and then reheating to 1575°F.
    Forged: May be forged at 2200 down to 1800°F.
    Hot working: May be accomplished prior to hardening or carburizing.
    Cold working: May be cold worked in the annealed condition by conventional methods. Cold working, as with machining, should be done to us close a tolerance as possible before heat treatment or carburizing.
    Annealed: Full anneal at 1550°F and slow cooling at not more than 50°F per hour down to 850°F. From there it may be air cooled.
    Tempered: Tempering of carburizing parts is done at 250 to 300°F and this will result in the alloy having a core strength of approx. 135 ksi minimum with Rockwell C case hardness of 90. Tempering of heat treated and water quenched parts (not carburized) is done at 400 to 1300°F with greater hardness the lower the tempering temperature.
    Hardened: Is done by oil quench from 1675°F Carburizing is accomplished at the same 1650 to 1700°F range in a carburizing "pack" or environment, followed by oil quench for thin sections or a furnace cool for heavier (over 3/4") sections. Following carburizing of heavy sections a reheat at 1575°F will enhance both case and core properties of the alloy.

PROPRIETARY Unisteel 8620 International Equivalent Materials

Showing 15 of 123 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
SA-513 8620
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
8620
STANDARD
AISI
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
G86200
STANDARD
UNS
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
20NiCrMo2
STANDARD
AFNOR NF
COUNTRY / PRODUCER
France
EQUIVALENCE CATEGORY
Implicit
MATERIAL
A 513 Grade 8620
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
A 322 8620
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
20NiCrMo2
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Implicit
MATERIAL
20NCD2
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
21NiCrMo2
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
20CrNiMo
STANDARD
GB
COUNTRY / PRODUCER
China
EQUIVALENCE CATEGORY
Implicit
MATERIAL
SNCM220
STANDARD
JIS
COUNTRY / PRODUCER
Japan
EQUIVALENCE CATEGORY
Implicit
MATERIAL
SNCM240
STANDARD
JIS
COUNTRY / PRODUCER
Japan
EQUIVALENCE CATEGORY
Implicit
MATERIAL
8620
STANDARD
NMX
COUNTRY / PRODUCER
Mexico
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
20NiCrMo2
STANDARD
UNE
COUNTRY / PRODUCER
Spain
EQUIVALENCE CATEGORY
Implicit
MATERIAL
20NiCrMo2
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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  • 123Cross References
  • 8Composition
  • -Mechanical Properties
  • 5Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • 83Joints
  • -Coatings
  • -Dimensions
  • 1Tribology
  • 8491Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 49Total Suppliers