T OOL S TEEL F ACTS IMPAX Hi Hard Prehardened ... - Uddeholm

T O O L S T E E L F A C T S
IMPAX Hi Hard
Prehardened mould steel
Wherever tools are made
Wherever tools are used

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IMPAX Hi Hard
General
IMPAX Hi Hard is a prehardened mould steel with
a higher hardness, 360–400 HB, than well-known
IMPAX SUPREME. The higher hardness gives an
increased resistance to wear and indentations
which means enhanced mould life.
The chemical composition and way of manufacture
is the same as for IMPAX SUPREME which means
that IMPAX Hi Hard has the same very good
polishability and etchability that is characteristic
for IMPAX SUPREME.
IMPAX Hi Hard is manufactured to consistently
high quality standards with a very low sulphur content,
giving a steel with the following characteristics:
■ Good polishing and photo-etching properties
■ High purity and good homogeneity
■ Uniform hardness.
Note: IMPAX Hi Hard is 100% ultrasonic tested.
Approx. C Si Mn Cr Ni Mo S
analysis %
Standard
0,37
0,3 1,4 2,0 1,0 0,2

Machining
recommendations –
IMPAX Hi Hard
The cutting data below are to be considered as
guiding values which must be adapted to existing
local conditions.
Condition: hardened and tempered to 360–
400 HB
TURNING
Turning with carbide
Cutting data
parameters Rough turning Fine turning
Cutting speed, (vc)
m/min. 100–150 150–200
f.p.m.
Feed (f)
328–492 492–656
mm/r 0,3–0,6 –0,3
i.p.r. 0,012–0,024 –0,012
Depth of cut, (ap)
mm 2–4 –2
inch 0,08–0,16 –0,08
Carbide designation
ISO P20–P30 P10
US C6–C5 C7
Coated Coated
carbide carbide or
cermet
DRILLING
High speed steel twist drill*
Drill diameter Cutting speed (vc) Feed (f)
mm inch m/min f.p.m. mm/r i.p.r.
–5 –3/16 14 46 0,05–0,15 0,002–0,006
5–10 3/16–3/8 14 46 0,15–0,25 0,006–0,010
10–15 3/8–5/8 14 46 0,25–0,30 0,010–0,012
15–20 5/8–3/4 14 46 0,30–0,35 0,012–0,014
* Coated HSS, uncoated HSS drill is not recommended
Type of drill
Cutting data Indexable Solid Brazed
parameters insert carbide carbide1) Carbide drill
Cutting
speed, (vc)
m/min. 140–160 90–120 50–70
f.p.m.
Feed (f)
459–525 295–394 164–230
mm/r 0,03–0,122) 0,05–0,202) 0,10–0,202) i.p.r. 0,001–0,0052) 0,002–0,0082) 0,004–0,0082) 1) Drill with internal cooling channels and brazed tip.
2) Depending on drill diameter.
MILLING
IMPAX Hi Hard
Face and square shoulder milling
Milling with carbide
Cutting data Rough Fine
parameters milling milling
Cutting speed, (vc)
m/min. 80–100 100–130
f.p.m. 262–328 328–426
Feed (fz)
mm/tooth 0,2–0,4 0,1–0,2
inch/tooth 0,008–0,016 0,004–0,008
Depth of cut, (ap)
mm 2–5 –2
inch 0,08–0,20 –0,08
Carbide designation
ISO P20–P40 P10
US C6–C5 C7
Coated Coated
carbide carbide or
cermet
Type of milling
Carbide
Cutting data Solid indexable High speed
parameters
Cutting
carbide insert steel
speed, (vc)
m/min. 50–90 50–90 15–201) f.p.m. 164–295 164–295 49–661) End milling
Feed (fz)
mm/tooth 0,006–0,20 2) 0,06–0,20 2) 0,01–0,35 2)
inch/tooth 0,0002–0,008 2) 0,002–0,008 2) 0,0004–0,014 2)
Carbide
designation
ISO K10, P40 P20–P30 –
US C3, C5 C6–C5 –
1) Coated HSS, uncoated HSS is not recommended
2) Depending on radial depth of cut and cutter diameter.
GRINDING
A general grinding wheel recommendation is given
below. More information can be found in the
Uddeholm publication “Grinding of Tool Steel”.
Type of grinding Wheel recommendation
Surface grinding straight wheel A 46 HV
Surface grinding segments A 36 GV
Cylindrical grinding A 60 KV
Internal grinding A 60 IV
Profile grinding A 120 JV
This information is based on our present state of knowledge and is
intended to provide general notes on our products and their uses.
It should not therefore be construed as a warranty of specific
properties of the products described or a warranty for fitness for a
particular purpose.
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IMPAX Hi Hard
UDDEHOLM EUROPE
AUSTRIA
EASTERN EUROPE
Bulgaria, Jugoslavia, Roumania.
SSB SWEDSTEEL BAIER
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20, Athinon Street, G-Piraeus 18540
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Steel Trading Comp. and Hardening Shop
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Italia S.p.A.
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HERTSCH & CIE AG
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Telefax: +41 1 201 46 15
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Telephone: +41 1 207 11 11
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NORDIC
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SVENSKA AB
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Wherever tools are made
Wherever tools are used
ASSAB
ASSAB INTERNATIONAL
Head office
Gustavslundsvägen 34
P O Box 14025
S-167 14 Bromma, Sweden
Telephone: +46 8 704 66 70
Telefax: +46 8 25 02 37
Subsidiaries/Branch offices
Argentina, Iran
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Head office
ASSAB Pacific Pte. Ltd
171, Chin Swee Road
No. 07-02, San Centre
Singapore 169877
Telephone: +65 534 56 00
Telefax: +65 534 06 55
Subsidiaries
CHINA
ASSAB Tooling Technology Co. Ltd.
No. 5340 Hu Min Road
Ming Mang District
Shanghai, China
Telephone: +86 21 6492 0566
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HONG KONG
ASSAB Steels (H.K.) Ltd
Room 1701–1708, Tower 2
Grand Central Plaza 138
Shatin Rural Committee Road
Shatin, N.T., Hong Kong
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KOREA
ASSAB Steels (Korea) Co Ltd
1168-8L, 687-8, Kojan Dong
Namdong-ku, Incheon, Korea
Telephone: +82 32 821 4300
Telefax: +82 32 821 3311
MALAYSIA
ASSAB Steels (Malaysia) Sdn Bhd
Lot 19, Jalan Perusahaan Dua
Batu Caves Industrial Estate
68100 Batu Caves, Selangor, Malaysia
Telephone: +60 3 689 0022
Telefax: +60 3 689 0055/44
SINGAPORE
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18 Penjuru Close
Singapore 608616
Telephone: +65 862 2200
Telefax: +65 862 0162
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ASSAB Steels (Taiwan) Co. Ltd
No 112 Wu Ku Industry Zone
Wu Kung 1st Road
Taipei Hsien R.O.C., Taiwan
Telephone: +886 2 299 2848/9
Telefax: +886 2 299 0147
THAILAND
ASSAB Steels (Thailand) Ltd
9/8 Soi Sirichai Apartment
Taeparak Road, K.M. 12
Bangplee, Samutprakarn 10540
Thailand
Telephone: +66 2 385 5937-42
Telefax: +66 2 385 5943
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Head office
ASSAB Steels Pty. Ltd.
2 A Cambridge Street
Box Hill, Vic 3128
Melbourne
Telephone: +61 39 899 16 66
Telefax: +61 39 899 06 05
Subsidiaries/Branch offices
Sydney, Adelaide, Newcastle
Perth, Brisbane, Launceston
05.2000
Edition: 1