Bohler-Uddeholm UDDEHOLM RAMAX® LH Plastic Mold Steel

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Bohler-Uddeholm UDDEHOLM RAMAX® LH Plastic Mold Steel (discontinued **)
Categories:	Metal; Ferrous Metal; Stainless Steel
Material Notes:	Uddeholm Ramax LH is a new chromium alloyed stainless holder steel, which is supplied in the hardened and tempered condition. RAMAX® LH is characterized by: Excellent machinability Good corrosion resistance Good hardenability Uniform hardness in all directions Good indentation resistance Applications Holders/bolsters for plastic moulds Plastic and rubber moulds with low requirements on polishability Die and calibers for plastic extrusion Constructional parts
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Physical Properties	Original Value	Comments

Density	0.280 lb/in³	hardened and tempered to 350 HB

Mechanical Properties	Original Value	Comments
Hardness, Brinell	290	Hardened and tempered (Delivery condition)
	270 - 310
Tensile Strength, Ultimate	147000 psi	(hardened to 302 HB)
	131000 psi @Temperature 199 °C	(hardened to 302 HB)
Tensile Strength, Yield	125000 psi @Strain 0.2 %	68°F (hardened to 302 HB)
	112000 psi @Strain 0.2 %, Temperature 199 °C	hardened to 302 HB
Elongation at Break	13 %	(hardened to 302 HB)
	13 % @Temperature 199 °C	hardened to 302 HB
Reduction of Area	43 % @Temperature 199 °C	hardened to 302 HB
	45 % @Temperature 20.0 °C	hardened to 302 HB
Modulus of Elasticity	30500 ksi	68°F, (hardened and tempered to 302 HB)
	29000 ksi @Temperature 199 °C	hardened and tempered to 302 HB
Impact Test	133 ft-lb	unnotched

Thermal Properties	Original Value	Comments
CTE, linear	6.10 µin/in-°F @Temperature 199 °C	hardened and tempered to 302 HB
Specific Heat Capacity	0.110 BTU/lb-°F @Temperature 20.0 °C	hardened and tempered to 302 HB
Thermal Conductivity	24.0 W/m-K @Temperature 199 °C	hardened and tempered to 302 HB

Component Elements Properties	Original Value	Comments
Carbon, C	0.12 %
Chromium, Cr	14 %
Iron, Fe	82.64 %	as balance
Manganese, Mn	1.45 %
Molybdenum, Mo	0.20 %
Nickel, Ni	0.36 %
Silicon, Si	1.0 %
Sulfur, S	0.13 %
Vanadium, V	0.10 %

**
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NBUCOR26 / 15495

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