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Elmet Technologies

Schmolz + Bickenbach UGIMA 304/304L® Stainless Steel Bar
Categories: Metal; Ferrous Metal; Stainless Steel; T 300 Series Stainless Steel

Material Notes: 304/304L UGIMA® is the next generation of improved high machinability grades from Ugitech. The UGIMA® grades have redefined high machinability stainless steels, showing improvements over the original UGIMA® technology. 304/304L UGIMA® is identical in every way to the standard 304/304L, except with respect to Machinability. UGIMA® is a proprietary manufacturing process, developed by Ugitech, which has resulted in a product that increases productivity and tool life, and improves the surface finish on all types of machined parts. 304/304L UGIMA® meets all industry specifications for Type 304/304L. This grade is designed to minimize carbide precipitation during welding to ensure good corrosion resistance properties in many corrosive environments. Once an optimum setup has been established, machinists can take advantage of the increased efficiency rates, especially during “lights-out” production.

Information provided by Schmolz + Bickenbach

Key Words: AISI 304/304L; UNS S30400; UNS S30403; ASTM A182; A193 Class 1; A276; A314; A320 Class 1; A479; A484; A580; F899; ASME SA-182; SA-193; SA-276; SA-479; AMS 5639; 5647; AMM-QQ-S-763; NACE MR0175; SAE J405 30304/30304L; EN 10088-3 1.4301/1.4307, X5CrNi18-10/X2CrNi18-9
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Physical PropertiesMetricEnglishComments
Density 7.89 g/cc0.285 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell  160 - 180
@Thickness >=25.4 mm
160 - 180
@Thickness >=1.00 in
Turned Bars
 200 - 220
@Thickness <=25.4 mm
200 - 220
@Thickness <=1.00 in
Cold Drawn Bars
Tensile Strength  552 - 655 MPa
@Thickness >=25.4 mm
80000 - 95000 psi
@Thickness >=1.00 in
Turned Bars
 689 - 793 MPa
@Thickness <=25.4 mm
100000 - 115000 psi
@Thickness <=1.00 in
Cold Drawn Bars
Tensile Strength, Yield  241 - 379 MPa
@Strain 0.2 %
35000 - 55000 psi
@Strain 0.2 %
Turned Bars
 414 - 552 MPa
@Strain 0.2 %
60000 - 80000 psi
@Strain 0.2 %
Cold Drawn Bars
Elongation at Yield  >= 40 %
@Thickness <=25.4 mm
>= 40 %
@Thickness <=1.00 in
Cold Drawn Bars
 >= 50 %
@Thickness >=25.4 mm
>= 50 %
@Thickness >=1.00 in
Turned Bars
Reduction of Area  >= 60 %
@Thickness <=25.4 mm
>= 60 %
@Thickness <=1.00 in
Cold Drawn Bars
 >= 70 %
@Thickness >=25.4 mm
>= 70 %
@Thickness >=1.00 in
Turned Bars
Tensile Modulus  200 GPa
@Temperature 20.0 °C
29000 ksi
@Temperature 68.0 °F
 200 GPa
@Temperature 100 °C
29000 ksi
@Temperature 212 °F
 200 GPa
@Temperature 200 °C
29000 ksi
@Temperature 392 °F
 200 GPa
@Temperature 300 °C
29000 ksi
@Temperature 572 °F
 200 GPa
@Temperature 400 °C
29000 ksi
@Temperature 752 °F
 200 GPa
@Temperature 500 °C
29000 ksi
@Temperature 932 °F
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000730 ohm-cm0.0000730 ohm-cm
Magnetic Permeability <= 1.1<= 1.1at 10% cold work
 
Thermal PropertiesMetricEnglishComments
CTE, linear  2.88 µm/m-°C
@Temperature 20.0 - 100 °C
1.60 µin/in-°F
@Temperature 68.0 - 212 °F
 2.97 µm/m-°C
@Temperature 20.0 - 200 °C
1.65 µin/in-°F
@Temperature 68.0 - 392 °F
 3.06 µm/m-°C
@Temperature 20.0 - 300 °C
1.70 µin/in-°F
@Temperature 68.0 - 572 °F
 3.24 µm/m-°C
@Temperature 20.0 - 400 °C
1.80 µin/in-°F
@Temperature 68.0 - 752 °F
 3.24 µm/m-°C
@Temperature 20.0 - 500 °C
1.80 µin/in-°F
@Temperature 68.0 - 932 °F
Thermal Conductivity 14.8 W/m-K
@Temperature 20.0 °C
103 BTU-in/hr-ft²-°F
@Temperature 68.0 °F
 
Processing PropertiesMetricEnglishComments
Annealing Temperature 1010 - 1090 °C1850 - 2000 °Ffollowed by rapid cooling with forced air or water quenching
Hot-Working Temperature >= 899 °C>= 1650 °FForge
 1163 - 1260 °C2125 - 2300 °FHeat in range
 
Component Elements PropertiesMetricEnglishComments
Carbon, C <= 0.030 %<= 0.030 %
Chromium, Cr 18 - 20 %18 - 20 %
Copper, Cu <= 1.0 %<= 1.0 %
Iron, Fe >= 61.8 %>= 61.8 %
Manganese, Mn <= 2.0 %<= 2.0 %
Molybdenum, Mo 2.0 - 3.0 %2.0 - 3.0 %
Nickel, Ni 8.0 - 11 %8.0 - 11 %
Nitrogen, N <= 1.0 %<= 1.0 %
Phosphorus, P <= 0.040 %<= 0.040 %
Silicon, Si <= 1.0 %<= 1.0 %
Sulfur, S <= 0.030 %<= 0.030 %
 
Descriptive Properties
Corrosion ResistanceAcetic Acid2/4
 Humidity3/4
 NaCl (Saline Mist)3/4
 Nitric Acid3/4
 Phosphoric Acid2/4
 Sodium Carbonate3/4
 Sulfuric Acid2/4

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