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MIM material performance and technical characteristics
MIM material performance and technical characteristics
 ShenZhen YuJiaXin Hardware Products Co., Ltd.
Metal powder injection molding technology characteristics
   Metal Injection Molding,or MIM,is a new Powder Metallurgy process that can produce sintered componects with high densety and complicated shapes without the need for machining. With its unique characteristics, MIM is capable of producing precise metal parts for a wide range of products, including automobiles, cellular phones,hand tools,dental instruments,pneumatic tools, power hand tools, surgical instruments,sporting goods, and laptop computers. The common materials used in MIM range from stainless steels and alloy steels to soft magnetic matericals.
                                  

Comparison between MIM and other processes
 
Comparison project MIM P/M Die Casting Investment Casting Machining
Part density High Low High Fair High
Part tensile strength 0.5mm 1mm 0.8mm 2mm 0.5mm
Part surface finish Fine1 μm Ra Coares Medium Medium 5 μm Ra Fine
Parts miniaturization capability Good Fair Poor Fair Good
Parts thin-walled capacity Many Average Few Average Many
Parts complexity 95~100% <95% 99~100% 99~100% 99~100%
Tolerance of part design Average High Average Average High
Mass production capacity Good Poor Fair Good Good
Adaptive material range High High High Fair Low
Supply capacity Average Low Low Average High
 
Yujiaxin company MIM Material properties
 
Material
Designation
Alloy
Composition
(wt%)
Condition Density
ρ(g/cm³)
UTS
σ b(Mpa)
YS
σ0.2(Mpa)
Elongation
σ(%)
Hardness
Low Alloy Steel
MIM4600
(MIM2200)
Ni 1.5~2.5%
Mo 0.5% max
Fe balance
Sinterd 7.50 290 125 40 45~65HRB
MIM4600
(modeifed)
(MIM2700)
Ni 6.5~8.5%
Mo 0.5%max
Fe balance
Sinterd 7.60 410 210 26 70~90HRB
MIM4605 Ni 1.5~2.5%
Mo 0.2~0.5%
C 0.4~0.6%
Fe balance
Sinterd 7.50 415 255 15 65-85HRB
Heat Treated 7.50 1655 1480 2 45~50HRC
MIM4140 Ni 0.75~1.25%
Cr 0.75~1.25%
Mo 0.75%max
C 0.3~0.5%
Fe balance
Sinterd 7.50 820 620 10 70~100HRB
Heat Treated 7.50 1400 820 5 45~45HRC
 
Stainless Steel
MIM SS316L C 0.03%max
Ni 10~14%
Mo 2~3%
Cr 18~20%
Fe balance
Sinterd 7.75 500 250 4 65~85HRB
MIM SS304 C 0.08% max
Ni 8~10%
Cr 18~20%
Fe balance
Sinterd 7.65 480 270 35 65~85HRB
MIM SS420 C 0.2~0.4%
Cr 12~14%
Fe balance
Heat Treated 7.40 1310 11500 6 40~45HRC
MIM 17-4PH C 0.07%max
Cr 15.5~17.5%
Cu  3~5%
Ni 3~5%
Nb 0.15~0.45%
Fe balance
Sinterd 7.50 900 730 6 20~28HRC
Heat Treated 7.50 1185 1090 5 32~42HRC
MIM SS310S   Sinterd 7.70 520 205 40 80~100HRB
 
Magnetic Materials
MIM Fe3Si C0.05%
Si 2.5~3.5%
Fe balance
Sinterd 7.60 530 390 24 75~85HRB
MIM Fe50Ni C 0.05%max
Ni 49~51%
Fe balance
Sinterd 7.70 455 160 30