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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
Price	EMAIL US sales@lookpolymers.com
	Online Service lookpolymers 27660005

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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