Accuromm Central Europe

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Materials

Solid carbide bars & rods

Extreme strong and wear resistant carbide rods

Next level carbide rods
High quality, all made in Japan

World-class traverse rupture strength

With and without internal coolant, straight/Helical coolant, unground or ground

"Binderless" cobalt free grade for incredible corrosion & wear resistance

NA series TZ alloy

Product information

TZ alloy is new ultra-fine grain cemented carbide.
TZ alloy claims to be the world’s highest strength and abrasion resistance.

  • Manufactured with strong tie-up of material manufacturers
  • World's highest strength
    Achieved world's highest tensile strength of 5 GPa. Extremely high strength material. Characteristics of this material are that its strength does not deteriorate easily even at high hardnesses.
  • Excellent wear resistance & high temperature hardness
    The material composition phase is different from that of conventional ultra-fine-grained cemented carbides, resulting in excellent wear resistance. Experimental results have also shown that the high-temperature hardness does not deteriorate easily.
  • Ultra-fine grain by new manufacturing process
    TZ alloys are made ultrafine-grained by a mechanism (pinning effect of Ti(C,N)) different from conventional ultrafine-grained cemented carbides. This ensures that the interface strength of the WC/Co is not reduced and excellent properties are achieved. Patent No. 6227517, etc.

Cutting test data

Cutting test data is based on non-coated carbide drill.

NA series TZ alloy based carbide drill cutting tool showed an improvement at an automobile manufacturer, where tool life was increased by 1.7 times.

Tool used

Coated carbide step drill QT-428 (ø8×ø12)
using NA series TZ10 grade 

Work materialSCr420HJ / 5120 / 20Cr4 / G51200 / 1.7027
Cutting speed Vc = 85 m/min (at 3,400 min-1)
Feed speedf = 0.18 mm/rev
Hole size
and depth

ø8 × ø12 mm × 8mm depth
(through hole)

Cutting fluidNon-water soluble cutting fluid
(internal coolant)
Machine usedVertical machining centre (BT30)

Tool wear rate comparison

Through hole sized ø8 × ø12 mm with 8mm depth

Competitor tool wear rate Vb=0.243mm at 24,000 pcs

NA series TZ10 grade tool wear rate Vb=0.035mm at 24,000 pcs

NA series TZ10 grade tool wear rate Vb=0.130mm at 40,000 pcs

Test material

MaterialChemical compositionTransverse rupture strengthHardness
  GPaHRA
❶ TZ 10
(with Ti(C,N)-Cr3C2 additive)		WC-Ti(C,N)-Cr3C2 + 10% Co4.792.7

❷ Ultrafine grain cemented carbide

(with VC / Cr3C2 additive)

WC-VC-Cr3C2 + 10% Co3.893.7

❸ Ultrafine grain cemented carbide

(with Cr3C2 additive)

WC-Cr3C2 + 10% Co4.191.8

❹ General cemented carbide

(Standard K type)

WC + 10% Co3.589.9

Standard grades

Physical and mechanical properties​

SeriesGradeGrain SizeISO / JISHardnessTRSDensityChemical Composition [wt%]
[µm][Code][HRA][Gpa][g/cm3]WCCoOther
NHNU080.3K0593.84.314.6Bal.8.00.3
NF080.5K05-K1093.24.514.5Bal.8.00.3
TF9K0.5K05-K1593.03.814.5Bal.9.00.5
NF100.5K10-K3092.54.614.3Bal.10.00.3
TUZ5T0.6K05-K1093.03.215.0Bal.5.00.5
TUZ80.6K10-K2092.04.214.3Bal.10.0–
TUZ20K0.6K15-K4091.23.914.1Bal.13.00.5
NF150.8K20-K4091.54.314.4Bal.10.0–
TK80.8-2.0K1092.03.314.9Bal.5.50.66
TG21.5-3.5K2090.83.514.8Bal.7.0–
TG51.5-3.5K4088.03.614.2Bal.12.5–
KGF04N0.3-1VF-1095.03.815.0Bal.4 
F08S0.3-1VF-1093.54.514.6Bal.8 
F120.3-1VF-2092.04.614.2Bal.12 
F140.3-1VF-3091.34.814.0Bal.14 
MR071-2.5VM-3091.93.914.8Bal.7 
MR09P1-2.5VM-3091.34.014.6Bal.9 
MR12P1-2.5VM-4090.03.914.2Bal.12 
MR16D1-2.5VM-5088.03.913.9Bal.16 
CR053-5VC-3091.13.315.0Bal.5 
CR093-5VC-3089.73.314.6Bal.9 
CR163-5VC-5087.03.313.8Bal.16 
U16D7-10VU-6086.03.013.9Bal.16 
U20D7-10VU-6083.53.013.6Bal.20 
NATZ40.4 94.84.3  4 
TZ60.4 94.24.4  6 
TZ80.4 93.44.6  8 
TZ100.4 92.74.7  10 

※: All grades available in bar format, highlighted grades are also available as pre-forms.

Applications

  Suitable toolsWork material
SeriesGradeEnd-millDrillReamerPunch-ing toolMild steelGeneral steelHigh hardness steelStainless steelTitanium alloyInconelCast ironCopper alloyGraphite
NHNU08☆            
NF08★   ☆★★      
TF9K★☆☆   ☆☆☆☆ ★ 
NF10☆★  ★★☆★☆☆☆  
TUZ5T  ★    ☆    ★
TUZ8★★☆ ★★☆★☆☆☆  
TUZ20K★★  ☆☆    ★  
NF15★★  ★★ ☆★★★  
TK8  ☆  ☆    ★★ 
TG2☆☆ ☆☆     ☆  
TG5   ★★☆      ☆ 
 
  Suitable toolsWork material
SeriesGradeEnd-millDrillReamerPunch-ing toolMild steelGeneral steelHigh hardness steelStainless steelTitanium alloyInconelCast ironCopper alloyGraphite
KGF04N             
F08S             
F12             
F14             
MR07             
MR09P             
MR12P             
MR16D             
CR05             
CR09             
CR16             
U16D             
U20D             
 
  Suitable toolsWork material
SeriesGradeEnd-millDrillReamerPunch-ing toolMild steelGeneral steelHigh hardness steelStainless steelTitanium alloyInconelCast ironCopper alloyGraphite
NATZ4 ☆☆  ☆★☆☆☆☆  
TZ6 ☆☆  ☆★☆★☆☆  
TZ8☆☆☆  ★☆★★★★  
TZ10☆☆☆  ★☆★☆★★