UNI 1.4477 Stainless steels

Material group: Ferrous Alloys / Stainless steels
Country/Standard: Italy / UNI

Data updates

Latest Update: 2020-03
Total number of updates: 4
Update History
2019-09 2015-02 2014-04

This material has 265 properties — only a subset is shown here.

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UNI 1.4477 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.030
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
28.0 – 30.0
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
≤ 0.80
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
N
VALUE
val1
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UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
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

EN 10088-1: 2023 / Stainless steels - Part 1: List of stainless steels

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UNI 1.4477 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 215 GPa
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Density
val1
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kg/dm³
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Poisson Coefficient
val1
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Thermal Conductivity
13 W/(m∙°C)
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Heat Capacity
val1
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J/(kg∙°C)
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Electrical Resistivity
0.8 Ω∙mm²/m
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Electrical Conductivity
val1
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S/m
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This material has 265 properties — only a subset is shown here.

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UNI 1.4477 Heat Treatments

  • Hot forming: 1150-1000°C, air cooling;
    +AT - Solution annealing: 1040-1120°C (If heat treatment is carried out in a continuous furnace, the upper part of the range specified should usually be preferred, or even exceeded), air or water cooling; Cooling sufficiently rapidly in order to avoid precipitation.
  • Hot forming: 1200-1000°C, air cooling; Solution annealing (+AT): 1040-1120°C, water cooling. If heat treatment is carried out in a continuous furnace, the upper part of the range specified should usually be preferred, or even exceeded.

UNI 1.4477 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
750 — 1050 MPa
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Elongation, A
20 %
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Impact Energy
val1
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J
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Brinell Hardness (HB)
≤ 310
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  • 68 Cross References
  • 59 Composition
  • 59 Mechanical Properties
  • 15 Physical Properties
  • 4 Heat Treatment
  • - Metallography
  • - Machinability
  • 11 Stress-Strain
  • - Formability
  • - Fatigue
  • - Fracture
  • - Creep
  • - Joints
  • - Coatings
  • 4 Dimensions
  • - Tribology
  • - Corrosion
  • - Ageing
  • - Weatherability
  • - Irradiation
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