GOST S34809 Stainless steels

Material group: Ferrous Alloys / Stainless steels
Country / Standard: Russia / GOST

Data updates

Latest Update: 2026-02
Total number of updates: 4
Update History
2025-11 2025-08 2025-06

This material has 246 properties — only a subset is shown here.

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GOST S34809 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.04 – 0.10
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
17.0 – 19.0
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
≤ 2.00
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Nb
VALUE
val1
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UNIT
%
CAS NUMBER
7440-03-1
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
CRITERIA
Ta
VALUE
val1
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UNIT
%
CAS NUMBER
7440-25-7

GOST R 71799: 2024 / Seamless austenitic steel pipes for high-temperature service. Specifications

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GOST S34809 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 215 GPa
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Density
7.61 — 8.1 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 246 properties — only a subset is shown here.

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GOST S34809 Heat Treatments

  • For cold-formed pipes: ≥ 1100°C, quenching in water or accelerated cooling by other means
    For hot-formed pipes: ≥ 1050°C, quenching in water or accelerated cooling by other means;
    Heat treatment at temperatures above 1065°C may impair their resistance to intercrystalline corrosion.
  • Seamless and welded cold formed pipes: Heating at minimum 1100°C, quenching in water or accelerated cooling by other means.
    Seamless and welded hot formed pipes: Heating at minimum 1050°C, quenching in water or accelerated cooling by other means.

GOST S34809 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
≥ 515 MPa
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Brinell Hardness (HB)
≤ 201
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Elongation, A
≥ 25 %
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Grain Size
val1
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Rockwell Hardness (HR)
val1
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Yield Strength, Rp0.2
val1
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MPa
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GOST S34809 International Equivalent Materials

Showing 15 of 154 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
08H18N12B
STANDARD
GOST
COUNTRY / PRODUCER
Russia
EQUIVALENCE CATEGORY
Official
MATERIAL
SA-312 TP348H
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
SA-240 S34809
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
SA-249 TP348H
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
SA-479 Type 348H
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
SA-813 TP348H
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
A 240 Type 348H
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
A 312 TP348H
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
A 403 WP348H
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
A 249 TP348H
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
A 479 348H
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
A 813 Grade TP 348H
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
A 240 S34809
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
A 249 S34809
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
A 813 S34809
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%

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

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  • 154Cross References
  • 38Composition
  • 22Mechanical Properties
  • 3Physical Properties
  • 4Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • 17Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 8Total Suppliers