buderus hot work tool steel hiperdie®buderus hot work tool steel hiperdie® buderus edelstahl gmbh...
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Bude
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Hot
Wor
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HIP
ERDI
E®
Buderus Edelstahl GmbH l Steel Bar Sales l Buderusstraße 25 l D-35576 WetzlarTelephone +49 (0) 64 41-374 2468 l Fax +49 (0) 64 41-374 2784 l [email protected] l www.buderus-steel.com
C Si Mn P S Cr Mo Ni V OthersTypical analysis 0.35 � 0.35 0.50 � 0.025 � 0.003 2.70 1.00 0.60 0.20 +
Figures in % by mass
CharacteristicsSpecial CrMoV-alloyed hot work tool steel with excellent high-temperature strength and better toughness properties than grade 2344 as well as higher thermal conductivity than the classic hot worktool steels 2343, 2344 and 2367. In comparison to the NiCrMoV – tool steels 2711/2714 HIgh PERformance DIE is characterized by higher wear resistance, comparable to grade 2343.
Applications l Close-die forging: Small and medium-sized dies and die inserts for a large number of forgings. l Highly stressed plastic moulds: Small and medium moulds as well as mould inserts subject to abrasive
stress caused by processing of thermosetting plastics, thermoplastics and composite materials also incombination with surface treatments.
Where there is a requirement for– Polishability > 400 paper grit– Sensitive etch designs (e.g. HNO3)– Higher thermal conductivitywe recommend grade Thruhard Supreme®
l Light alloy processing: Gravity – as well as low pressure die – casting moulds and tools up to 45 HRC.
Delivered conditionAnnealed to max. 250 HBQuenched and tempered to customer specifi cation on requestto max. 430 HB (� approx. 1450 MPa)*Sizes upon request
Physical properties (reference values)
Thermal expansion coeffi cient (10–6/K)
20–100 °C11.9
20–250 °C12.8
20–500 °C13.8
Thermal conductivity(W/mK)
20 °C38.3
250 °C37.1
500 °C35.3
Young’s modulus (GPa)
20 °C209
250 °C204
500 °C198
l Buderus Hot Work Tool Steel HIPERDIE®
* Surface hardness in Brinell, converted to DIN EN ISO 18265, Table A.1
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© Bu
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, Wet
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, 06/
2014
Heat treatment
Stress relieving Temperature: Approx. 650 °C in the annealed state40 °C below tempering temperature in the quenched and tempered state
Duration: 1 hour per 50 mm wall thicknessCooling: Furnace
Soft annealing Temperature: 750 °CDuration: 1 hour per 25 mm wall thicknessCooling: Furnace
Hardening Temperature: 950 °CDuration: 1 minute per mm wall thickness
Quenching hardness Max. 54 HRC in oil, salt bath or vacuum
Tempering Temperature: See tempering curveDuration: 1 hour per 25 mm wall thicknessCooling: Air
Working hardness Max. 430 HB
Tempering curve
TTT curve (continuous)
l HIPERDIE®
100
200
300
400
500
600
700
800
900
1000
1100
1200
01 10 102 103 104 105 106
1 10 100 1000 10 000
100100 100100 9999 9797
3311
100100
405 386 358401528537 488 414 411
100100100100
100100 100100
Tem
pera
ture
in °
C
Time
Seconds
Minutes
Austenitising temperature: 900 °C
3028
323436384042444648
286303319337
505254566062
0 100 200 300 400 500 600 700 800
354373392413436
HB
(461)
Har
dnes
s in
HRC
Tempering temperature in °C
hardened at 950 °C in oilHB converted from HRC
Average values on samples dia. 25 x 50 mm long
0
200
400
600
800
1000
1200
2714
2344
HIP
ERDI
E®
2714
2344
HIP
ERDI
E®
450 °C 550 °C
MPa
Comparison of high-temperature yield strengthQuenched and tempered to approx. 1400 MPa
Ac3
Ac1
Ms
Mf
P
0
10
20
30
40
2714 2344 HIPERDIE®
Comparison of impact valueQuenched and tempered to approx. 1400 MPaISO-V samples surface transverse 20 °C
J/cm
2
0
10
20
30
40
2714 2344 HIPERDIE®
Comparison of thermal conductivity at 250 °C
W/m
K