Metal Injection Molding Powder MIM-17-4PH

MIM-17-4PH

MIM-17-4PH is a precipitation hardening martensitic stainless steel that combines excellent corrosion resistance with high mechanical strength. The strength and hardness can be significantly improved through subsequent aging heat treatment, and it is widely used in medical devices, automotive parts, tools, machinery and other fields.

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Product Specifications

Chemical Composition (wt%)

C	Cu	Ni	Cr	Si	Mn	Nb	Fe
≤0.07	3.0-5.0	3.0-5.0	15.0-17.5	≤1.0	≤1.0	0.15-0.45	Bal.

Physical Properties

Item	Value	Value
Tap Density	≥4.6 g/cm³	≥4.6 g/cm³
D10	2-3 μm	2.0-3.5
D50	8-10 μm	9-11
D90	20-24 μm	25-29

Feedstock Parameters

Parameter	Unit	Typical	Range	Method
MFR	g/10min	1700	1500-2400	ISO 1133 (190℃, 21.6kg)
Green Density	g/cm³	5.25	5.2-5.35	ISO 3369
Sintered Density	g/cm³	7.7	7.6-7.75	ISO 3369
Tooling Factor	—	1.165	1.163-1.168	Tool Size / Part Size

Sintered Part Properties

Property	As-Sintered	H1000
Density (g/cm³)	≥7.60	≥7.60
Tensile Strength (MPa)	≥960	1200
Yield Strength (MPa)	≥730	1000
Elongation	≥5%	≥5%
Hardness (HV1)	≥280	≥400

As-Sintered Mechanical Properties Comparison

Grade	Density (g/cm³)	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation	Hardness (HV)
304L	≥7.80	≥500	≥180	≥50%	130-180
304 Hardened	≥7.80	≥550	≥180	≥35%	180-200
316L	≥7.85	≥500	≥180	≥50%	120-180
17-4PH	≥7.60	≥960	≥730	≥5%	≥280
420W	≥7.60	≥550	≥225	≥10%	290-350
420W-16	≥7.50	≥900	≥600	≥3%	450-490
440C	≥7.60	≥730	≥250	≥8%	500-700
4J29	>8.0	≥450	≥300	≥25%	250-320
LD-G19	≥7.8	900-1000	650-750	10-13%	260-330
F75	≥8.0	≥655	≥450	≥30%	≥250

Heat-Treated Properties Comparison

Grade	Heat Treatment Condition	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation	Hardness
17-4PH	H1000	1200	1000	≥4.5%	≥400 HV
420W	QT	≥750	≥550	≥3%	≥42 HRC
420W-16	QT	≥1100	≥800	≥4%	≥48 HRC
440C	QT	≥1000	≥960	≥3%	500-600 HV
LD-G19	1070℃+545℃	≥2000	≥1900	≥5%	≥50 HRC
F75	QT	≥1000	≥560	—	≥350 HV

Material Selection Guide

Requirement	Recommended Grade
Maximum Ductility & High Polishability	304L / 316L
Chloride Corrosion Resistance	316L
Corrosion Resistance + Higher Strength	17-4PH (H900)
High Hardness + Wear Resistance	440C
High Strength, High Hardness + Toughness	420W+Nb
Corrosion Resistance + Cost-Effective High Hardness	304 Hardened
Hermetic Sealing for Electronics	4J29
Ultimate Strength	LD-G19
Ultimate Corrosion Resistance + Medical Applications	F75