HPM-new | 鋐耀精工

◆ What's HPM ?

	Traditional PM	MIM	HPM (all new)
cost	low	high	medium
shape type	2D	3D	2D
density of sintering	low	high	high (similar as MIM)
mechanical property	average	fair	high (similar as MIM)
surface treatment

density of granuality 50~100 um

density of granualilty 15 um

density of granuality 15 um

Pre-treatment

density of granuality 50~100 um

sintering temp.

1120-1250°C

1300~1400°C

◆ Densitu Effects Matrix

density↑ property↑

traditional PM
heat press + high temp. sintering
HPM & MIM

◆ Homogenity of Alloying Elements (EPMA results---Electron Probe Microanalyzer)

PM (Distaloy® AE)

density of sintering = 7.2g/cm³

HPM (4605 type)

density of sintering = 7.6g/cm³

◆ AGMA 8 17-4PH HPM GEAR

traditional PM gear (6.67 g/cm3)

HPM gear (7.55 g/cm3)

	Overall Grid Failure Rate (mm)	Maximum Single-Tooth Mesh Error Rate (mm)	Total Gear Deviation Rate(mm)
AGMA 8 spec.	0.0494	0.0279	0.0354
HPM gear	0.0302	0.0108	0.0246

◆ AGMA 8 17-4PH HPM GEAR

density>7.5g/cm3 (PM:<7.2)
high strength, high stiffness
lower cost (MIM>HPM>PM)
lower tool cost: MIM x 20~30%
soon sample provision: 2~3 weeks
low shrinkage:5~7%
well tolerance control: ±0.3% (MIM ±0.5% )
no injection mark, weld line, countersink
new material adoption: 17-4PH, 4605 typical . (but MPIF standard)

◆ HPM vs MIM

15.6 x 5.3 x 8.5 mm

製程	MIM	HPM
tool design	8 caves	1 cave. (1 upper 1 lower)
tool cost	---	70% off
unit price	---	30% off
sample provision	21+ 7 days	14 + 5 days
capacity	19k/day	18 k/day

Φ9 x 2.5mm

Φ19 x 3.5mm

Φ11 x 2.0mm

production process	MIM	HPM
tool design	4 caves	1 cave (2 upper 2 lower)
tool cost	---	save 65%
unit price	---	save 25%
sample provision	21+ 7 days	14 + 5 days
capacity	9k/day	12 k/day

◆ HPM applicable material

material	density (g/cm³)	tensile strength (MPa)	yield strength (MPa)	elongation (%)	hardness
17-4PH(sintering)	>7.5	900	700	6	HRC 25 ~ 30
17-4PH(heat treatment)	>7.5	1,190	1,050	5	HRC 31 ~ 36
Fe8Ni(heat treatment)	>7.5	1,750	1,450	5	HRC 47 ~ 53
4605(heat treatment)	>7.5	1,655	1,480	2	HRC 46 ~ 52

◆ 17-4PH (PH series stainless steel)

production process	density (g/cm³)	tenstile strength (MPa)	llongation (%)	hardness
PM 17-4PH(sintering)	7.18	850	3.1	HRB 89
PM 17-4PH(heat treatment)	7.18	1,130	1.5	HRB 97
HPM 17-4PH(sintering)	7.61	900	6.0	HRB 24

Due to the significantly reduced porosity, the elongation and hardness of HPM components are greatly improved compared to those of conventional PM components

◆ 4605 Typical (high strength alloy steel)

HPM latch

4605 Typical material, density of 7.63g/cm³, free quench (sintering & tempering): HRC 50, 1,800MPa, 5% elongation

TPT Patent Material

Gear components for hand tools

◆ 4605 high hardness/ special alloy--elongaHon Alloy

Quality requirements can be met through material adjustment and heat treatment
The surface hardness can reach up to HV 700, while the core hardness can achieve HV 250 through carburizing