UGI® 4828

UGI® 4828

UGI® 4828 introduction

UGI® 4828 is a heat-resistant austenitic stainless steel with a higher silicon content than type-309 stainless steel (UNS 30900). Its high chromium and nickel contents, in addition to the silicon, provide superior resistance to oxidation and good strength at both ambient and elevated temperatures, even in sulphur-containing gases. UGI® 4828 is used for parts subject to high temperatures of up to 1000°C in furnaces, turbochargers, heat exchangers, and equipment used in the chemical, oil and glass industries.

Equivalent material: EN 1.4828, EN X15CrNiSi20-12, DIN 1.4828, DIN X15CrNiSi20-12, AFNOR Z17CNS20-12

UGI® 4828 general

Property Value
Density Density of 7.9 g/cm³

UGI® 4828 thermal

Property Temperature Value Comment
Coefficient of thermal expansion - Coefficient of thermal expansion of 0.0000165 1/K 20 to 200°C
- - Coefficient of thermal expansion of 0.0000175 1/K 20 to 400°C
- - Coefficient of thermal expansion of 0.0000195 1/K 20 to 100°C0
- 600 °C Coefficient of thermal expansion of 0.000018 1/K -
- 800 °C Coefficient of thermal expansion of 0.0000185 1/K -
Specific heat capacity 20 °C Specific heat capacity of 500 J/(kg·K) -
- 200 °C Specific heat capacity of 550 J/(kg·K) -
- 400 °C Specific heat capacity of 590 J/(kg·K) -
- 600 °C Specific heat capacity of 620 J/(kg·K) -
- 800 °C Specific heat capacity of 650 J/(kg·K) -
- 1000 °C Specific heat capacity of 670 J/(kg·K) -
Thermal conductivity 20 °C Thermal conductivity of 15 W/(m·K) -
- 200 °C Thermal conductivity of 17 W/(m·K) -
- 400 °C Thermal conductivity of 20 W/(m·K) -
- 600 °C Thermal conductivity of 23 W/(m·K) -
- 800 °C Thermal conductivity of 25 W/(m·K) -
- 1000 °C Thermal conductivity of 28 W/(m·K) -

UGI® 4828 chemical

Property Value Comment
Carbon Carbon of 0.15 max.
Chromium Chromium of 19.0 - 20.0 % -
Manganese Manganese of 2.0 max.
Nickel Nickel of 11.0 - 12.5 % -
Nitrogen Nitrogen of 0.1 max.
Phosphorus Phosphorus of 0.04 max.
Silicon Silicon of 1.5 - 2.5 % -
Sulfur Sulfur of 0.015 max.

UGI® 4828 electrical

Property Temperature Value
Electrical resistivity 20 °C Electrical resistivity of 0.00000085 Ω·m
- 200 °C Electrical resistivity of 0.00000105 Ω·m
- 400 °C Electrical resistivity of 0.0000012 Ω·m
- 600 °C Electrical resistivity of 0.0000013 Ω·m
- 800 °C Electrical resistivity of 0.0000014 Ω·m
- 1000 °C Electrical resistivity of 0.00000145 Ω·m

UGI® 4828 mechanical

Property Temperature Value Comment
Creep strength 10^3 cycles 600 °C Creep strength 10^3 cycles of 190 MPa -
- 700 °C Creep strength 10^3 cycles of 75 MPa -
- 800 °C Creep strength 10^3 cycles of 40 MPa -
- 900 °C Creep strength 10^3 cycles of 15 MPa -
Creep strength 10^4 cycles 600 °C Creep strength 10^4 cycles of 120 MPa 10^4 cycles
- 700 °C Creep strength 10^4 cycles of 36 MPa 10^4 cycles
- 800 °C Creep strength 10^4 cycles of 18 MPa 10^4 cycles
- 900 °C Creep strength 10^4 cycles of 8.5 MPa 10^4 cycles
Creep strength 10^5 cycles 600 °C Creep strength 10^5 cycles of 65 MPa 10^5 cycles
- 700 °C Creep strength 10^5 cycles of 10 MPa 10^5 cycles
- 800 °C Creep strength 10^5 cycles of 7.5 MPa 10^5 cycles
- 900 °C Creep strength 10^5 cycles of 3 MPa 10^5 cycles
Elastic modulus 20 °C Elastic modulus of 196 GPa -
- 200 °C Elastic modulus of 185 GPa -
- 400 °C Elastic modulus of 170 GPa -
- 600 °C Elastic modulus of 155 GPa -
- 800 °C Elastic modulus of 135 GPa -
- 1000 °C Elastic modulus of 120 GPa -
Elongation - Elongation of 30 % min., for 20-800°C
Hardness, Brinell - Hardness, Brinell of 223.0 max.
Hardness, Rockwell B - Hardness, Rockwell B of 95.0 max.
Tensile strength 20 °C Tensile strength of 550.0 - 750.0 MPa -
- 100 °C Tensile strength of 470.0 - 670.0 MPa -
- 200 °C Tensile strength of 440.0 - 640.0 MPa -
- 400 °C Tensile strength of 400.0 - 600.0 MPa -
- 600 °C Tensile strength of 350.0 - 650.0 MPa -
- 800 °C Tensile strength of 200.0 - 400.0 MPa -

UGI® 4828 application

Property - -
Application areas
Cold Forming
Corrosion properties
General machinability
Heat Treatment
Hot forming
Other Product Form Finish Tolerance Dimensions
Round Drawn h9 2-28 mm
Round Turned and polished h10-h11 22-130 mm
Round Descaled h12-k11 22-130 mm
Hexagonal Drawn - 3-55 mm
Wire rod Round Pickled - 5-32 mm
Drawn wire Round Hot - 0.8-16 mm
- Profile Bright - 2-70 m²

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