Heat Resisting Austenitic Stainless Steel U-310S-1.4845 Datasheet

Wrought Stainless Steel

Supplied by Columbus Stainless (Pty) Ltd

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Product Description
The heat resisting austenitics are highly alloyed stainless steel used for their excellent oxidation resistance, high temperature strength and creep resistance in high temperature applications. They are tough and ductile and can be readily fabricated and machined.

U-309S-1.4833 has very good oxidation resistance and this is improved even further with U-309S Si- 1.4828 , which has a higher silicon content.

The U-309S types have a lower nickel content compared to the U-310S types and this improves their resistance to hydrogen sulphide (H2S) attack at high temperatures.

The U-309S types are low carbon grades and are recommended for applications where sensitisation and subsequent corrosion by high temperature gasses or condensates during shutdown may pose a problem.

The U-309S types are used, for example, in applications such as furnace parts, fire box sheets, high temperature containers, catalytic converters, exhaust systems, etc.

The U-310S types have higher chromium and nickel contents to enable them to resist oxidation in continuous service at temperatures up to 1 200°C provided reducing sulphur gases are not present.

The higher silicon content in U-310S Si-1.4841 improves this oxidiation resistance even further.

In intermittent high temperature service, the U-310S types can be used at temperatures up to 1 030°C as they resist scaling and have a relatively low coefficient of expansion differential between the metal and the scale. These stainless steels have superior resistance to both the U-304 types and the U-309S types in carburising and reducing environments.

The U-310S types are used in applications such as furnace parts, muffles, radiant tubes, ammonia converters, etc.
General  
Material Status 
  • Commercial: Active
Availability 
  • Africa & Middle East
Available Documents
Technical Datasheet (English)
Metals General
Nominal Value
Unit
 
Applicable Specifications
     
--
 
 
-- 2
 
 
-- 3
 
 
-- 4
 
 
Metal Type
 
 
Alloy Identification
 
 
Metals Type Analysis
Nominal Value
Unit
 
Type Analysis
     
Carbon
%
 
Chromium
%
 
Manganese
%
 
Nickel
%
 
Nitrogen
%
 
Phosphorus
%
 
Silicon
%
 
Sulfur
%
 
Metals Physical
Nominal Value
Unit
 
Density
lb/in³
 
Metals Mechanical
Nominal Value
Unit
 
Tensile Strength (Ultimate)
     
1022°F 5
ksi
 
1022°F 6
ksi
 
Tensile Strength (Yield), 0.2%
     
1022°F 7
ksi
 
1022°F 8
ksi
 
Tensile Elongation (Break)
     
212°F
%
 
392°F
%
 
Tensile Modulus
     
-- 9
ksi
 
-- 10
ksi
 
Metals Thermal
Nominal Value
Unit
 
Mean Specific Heat
Btu/lb/°F
 
Mean CTE
     
32 to 212°F
in/in/°F
 
32 to 572°F
in/in/°F
 
Thermal Conductivity
     
212°F
Btu·in/hr/ft²/°F
 
932°F
Btu·in/hr/ft²/°F
 
Metals Electrical
Nominal Value
Unit
 
Electrical Resistivity
ohms·cir·mil/ft
 
Notes
1Typical properties: these are not to be construed as specifications.
2Cold Rolled and Hot Rolled
3Hot Rolled
4Cold Rolled
51,000 Hours
610,000 Hours
71% Strain, 10,000 Hours
81% Strain, 100,000 Hours
9In Tension
10In Torsion
 
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