Core Value Proposition
Engineered for Effortless Machining
Our pure iron billets feature controlled phosphorus content (0.020-0.035%) and ultra-fine grains (ASTM 8-9), specifically designed to:
Reduce cutting force by 35% vs. standard steel billets
Achieve Ra 1.6μm surface finish without grinding
Extend tool life 3x in CNC turning/milling
Critical Specifications
|
Parameter |
Our Billet |
Standard Billet |
Impact |
|
Hardness |
85-95 HB |
120-150 HB |
40% lower cutting energy |
|
Chip Breakability |
Class 2.0 (ISO) |
Class 4.5 |
Continuous spiral chips |
|
Decarb Depth |
≤0.05mm |
0.10-0.25mm |
Consistent machined dimensions |
|
Straightness |
≤0.2mm/m |
≤0.5mm/m |
Eliminates re-clamping |
Machining-Optimized Composition
|
Element |
Target Range |
Machining Benefit |
|
C |
0.015-0.025% |
Prevents built-up edge |
|
P |
0.020-0.035% |
Promotes chip fragmentation |
|
S |
≤0.008% |
Avoids tool notch wear |
|
Mn |
≤0.025% |
Controls work hardening |
|
O₂ |
≤60 ppm |
Reduces abrasive inclusions |
Free-cutting additives: Controlled Pb/Bi optional
Why Machinists Choose Us
Cutting Efficiency Guarantee
Tool Life Test Data:
|
Operation |
Insert Type |
Our Billet |
Competitor |
Improvement |
|
Turning |
CNMG 120408 |
380 mins |
112 mins |
239% |
|
Milling |
APKT 1604 |
95 pcs |
32 pcs |
197% |
urface Finish:
Achieve Ra 1.6μm with single-point turning (no grinding)
Structural Integrity
- Hardness deviation ≤5 HB across full length
- Zero internal voids (UT Class A per ASTM E588)
Cutting Parameter Recommendations
|
Process |
Speed |
Feed |
DOC |
Result |
|
Turning |
210-250 m/min |
0.20-0.30 mm/rev |
3.0 mm |
Continuous blue chips |
|
Face Milling |
180-220 m/min |
0.15-0.25 mm/tooth |
2.5 mm |
Ra 1.8μm |
|
Drilling (Ø20) |
60-80 m/min |
0.18-0.25 mm/rev |
- |
Burr-free holes |
Factory Capabilities
Precision Billet Production
- Continuous casting with EMS stirring
- On-line hardness mapping every 500mm
- Stress-relief annealing at 650°C
- Laser marking with heat number
| Description | Size available: (mm) |
| Iron Billets | 70mm*70mm*200mm |
| 70mm*70mm*350mm | |
| 70mm*70mm*400mm | |
| 130mm*130mm*1200mm | |
| 70mm*70mm*200mm | |
| 70mm*70mm*350mm | |
| 70mm*70mm*400mm | |
| 50mm*50mm*200mm | |
| 50mm*50mm*350mm | |
| 50mm*50mm*400mm | |
| 70mm*70mm*200mm | |
| 70mm*70mm*350mm | |
| 70mm*70mm*400mm | |
| 70mm*70mm*200mm | |
| 70mm*70mm*350mm | |
| 70mm*70mm*400mm |
Q: How to prevent built-up edge during low-speed cutting?
A: Our optimized C/P ratio eliminates BUE. Use uncoated carbide tools with chip breaker geometry.
Q: Can I achieve mirror finish (Ra 0.4μm) without polishing?
A: Yes. Specify our "Super-F" grade with hardness 100-105 HB. Use CBN tooling at 320 m/min + 0.05 mm/rev.
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