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Bohler-Uddeholm BÖHLER RAMAX® HH Modified 420F

Category Metal , Ferrous Metal , Stainless Steel , T 400 Series Stainless Steel
Manufacturer Bohler-Uddeholm
Trade Name BÖHLER
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Bohler-Uddeholm BÖHLER RAMAX® HH Modified 420F.pdf
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Material Notes:
Chromium alloyed steelTypical applications for Ramax® HH are: holders and bolsters for plastic molds, plastic and rubber molds with low requirements on polishability, and dies for plastic extrusion.RAMAX® HH is characterized by: Excellent machinability Good corrosion resistance Good hardenability Uniform hardness in all directions Good indentation resistance
Physical Properties Metric English Comments
Density 7.75 g/cc
0.280 lb/in³
hardened and tempered to 350 HB
Mechanical Properties Metric English Comments
Hardness, Brinell 340
340
Hardened and tempered (Delivery condition)
275 - 475
275 - 475
tempering temp 390-1110°F
Tensile Strength, Ultimate 1140 MPa
165000 psi
(hardened to 350 HB)
1020 MPa

@Temperature 199 °C
148000 psi

@Temperature 390 °F
(hardened to 350 HB)
Tensile Strength, Yield 993 MPa

@Strain 0.200 %
144000 psi

@Strain 0.200 %
68°F (hardened to 350 HB)
917 MPa

@Strain 0.200 %,
Temperature 199 °C
133000 psi

@Strain 0.200 %,
Temperature 390 °F
hardened to 350 HB
Elongation at Break 12 %
12 %
(hardened to 350 HB)
10 %

@Temperature 199 °C
10 %

@Temperature 390 °F
hardened to 350 HB
Reduction of Area 46 %

@Temperature 20.0 °C
46 %

@Temperature 68.0 °F
hardened to 350 HB
48 %

@Temperature 199 °C
48 %

@Temperature 390 °F
hardened to 350 HB
Modulus of Elasticity 215 GPa
31200 ksi
68°F, (hardened and tempered to 350 HB)
205 GPa

@Temperature 199 °C
29700 ksi

@Temperature 390 °F
hardened and tempered to 350 HB
Impact Test 180 J
133 ft-lb
unnotched
Thermal Properties Metric English Comments
CTE, linear 10.8 µm/m-°C

@Temperature 199 °C
6.00 µin/in-°F

@Temperature 390 °F
hardened and tempered to 350 HB
Specific Heat Capacity 0.460 J/g-°C

@Temperature 20.0 °C
0.110 BTU/lb-°F

@Temperature 68.0 °F
hardened and tempered to 350 HB
Thermal Conductivity 24.0 W/m-K

@Temperature 199 °C
167 BTU-in/hr-ft²-°F

@Temperature 390 °F
hardened and tempered to 350 HB
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