1.4845 || AISI 310S/H

1.4845 || AISI 310S/H

Heat-resistant austenitic chromium-nickel steel

The 1.4845 is among the heat-resistant austenitic chromium-nickel steels. It is well suited for an oxidizing environment at 1050 °C.

Heat-resistant Stainless Steel

1.4845 || AISI 310S/H

General properties in processing:

  • Comparable machinability to standard austenitic chromium-nickel steels
  • Good weldability
  • Good forgeability

Distinguishing properties:

  • Scale resistant up to 1050° C, maximum application range up to 1,050°C
  • Risk of embrittlement at operating temperatures 600°C<>900°C
  • Good mechanical properties due to high tensile strength at higher temperatures

Corrosion resistance:

  • Low: against oxidizing or reducing sulfur-containing gases
  • Moderate: at temperatures >900° C against carburizing or oxygen-poor gases

Applications:

  • Apparatus construction in the high-temperature range
  • Automotive industry
  • Construction industry
  • Chemistry and petrochemistry
  • Oil industry
  • High-temperature apparatus construction
  • Furnace construction
  • Cement industry

Chemical values – Reference analysis (weight proportion in  %)

Value Percentage
C ≤ 0,10
Si ≤ 1,5
Mn ≤ 2,0
P ≤ 0,045
S ≤ 0,015
Cr 24,0 – 26,0
Ni 19,0 – 22,0
N ≤ 0,11

Mechanical values at room temperature

Hardness HB ≤ 192
Yield strength Rp 0.2 ≥ 210 N/mm2
Tensile strength Rm 550 – 750 N/mm2
Elongation A5 ≥ 35 %

Creep strength

Creep strength is the mechanical initial stress that causes a material to break after a certain period of stress duration and at a constant temperature above the transition temperature under constant tensile force.

Temperature 1 000 h10 000 h100 000 h
Temperature: 600 °C
1 000 h:
170 N/mm2
10 000 h:
130 N/mm2
100 000 h:
80 N/mm2
Temperature: 700 °C
1 000 h:
80 N/mm2
10 000 h:
40 N/mm2
100 000 h:
18 N/mm2
Temperature: 800 °C
1 000 h:
35 N/mm2
10 000 h:
18 N/mm2
100 000 h:
7 N/mm2
Temperature: 900 °C
1 000 h:
15 N/mm2
10 000 h:
8,5 N/mm2
100 000 h:
3 N/mm2

Creep limit

Creep limit is the initial stress that leads to a specified plastic deformation under constant tensile stress at a predetermined temperature and duration of stress.

Temperature 1 % Creep limit for 1 000 h10 000 h
Temperature: 600 °C
1 % Creep limit for 1 000 h:
100 N/mm2
10 000 h:
90 N/mm2
Temperature: 700 °C
1 % Creep limit for 1 000 h:
45 N/mm2
10 000 h:
30 N/mm2
Temperature: 800 °C
1 % Creep limit for 1 000 h:
18 N/mm2
10 000 h:
10 N/mm2
Temperature: 900 °C
1 % Creep limit for 1 000 h:
10 N/mm2
10 000 h:
4 N/mm2

Coefficient of thermal expansion

Coefficient of thermal expansion for heat-resistant alloys, which have a high coefficient of thermal expansion and low thermal conductivity, leading to temperature and stress differences in a component or assembly. The coefficient of thermal expansion is expressed by the proportional length change for each degree of temperature increase, usually as 10 –6 K –1.

Temperature Coefficient of thermal expansion
Temperature: 200 °C
Coefficient of thermal expansion:
15,5
Temperature: 400 °C
Coefficient of thermal expansion:
17,0
Temperature: 600 °C
Coefficient of thermal expansion:
17,5
Temperature: 800 °C
Coefficient of thermal expansion:
18,5
Temperature: 1 000 °C
Coefficient of thermal expansion:
19,0

Standards for seamless pipes

  • EN 10216-5
  • EN 10297-2
  • SEW 470
  • ASME SA312

The information provided on this page is non-binding. It serves only as orientation.
We cannot guarantee the results in processing and application of the products.

Tables and rates

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