Things to know 
2. Sinter HIP Procedure
This more modern procedure combines vacuum sintering with HIP technology by having gas pressure treatment immediately after the sintering process and at the same high temperature in the same piece of equipment. In this process pressures of only 50 bar are required.

In addition, the compression of binding metal components compared to Co deposits, as mentioned above, is significantly reduced or even eliminated. Material produced using this process is of a consistently higher strength and quality than in the previous method.

Picture 1: HIP after sintering process

Picture 2: S-HIP one step process

Designation Value Tribo Tribo Competitor Competitorm Competitor
Grade   V25 SHIP V25 +HIP WM 1214 WM 1166 WM 889
Lowest value TRSmin MPa 3038 2816 2631 2512 1929
Transversal Rupture
Strength mean
TRS Æ MPa 3370 3210 3090 2840 2230
Highest value TRSmax MPa 3645 3555 3242 3023 2509


MPa 607 739 611 511 580
Counts of
n   30 30 30 30 30
Standard deviation s (n-1) MPa 133 178 167 135 138
Coefficient of
v % 3,95 5,55 5,40 4,75 6,19

TRS-values made by DIN ISO 3327 Form A (square sample 5x5x35 mm)
Differences between Hot Isostatical Pressing (HIP) and Sinter HIP Procedure
Differences between Hot Isostatical and Sinter HIP
1. Hot Isostatical Pressure
2. Sinter HIP Procedure Pressure

Plunger, Packing, Lubricant – a complex tribological system in LDPE hyper compressors
1. Introduction Pressure
2. Elementary structure of a plant for high-pressure polymerization of ethylene
3. The tribological system
4. Wear process in the tribological system
5. Practical knowledge from a carbide metal producer’s point of view
6. Other partners of the tribological system
7. Outlook
8. Summary
9. Reference

Samples measured by:

 1. Introduction Pressure