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MIM Material Properties

目录Table of Contents

MIM metals need to be chemically modified to withstand the complex metal injection molding process. Since various materials can be used for metal injection molding, we classify these metal materials into the following categories in our functional area.

Ferrous alloys: steel, stainless steel, tool steel, low alloy steel, iron-nickel alloys, special iron alloys such as Yin steel and Corvair iron-nickel-cobalt alloys.

Tungsten alloys: tungsten heavy alloys and tungsten copper

Hard materials: Cemented carbide (WC-Co) and cermet (Fe-TiC)

Special materials: precious metals, titanium alloys, cobalt-chromium, nickel, nickel-based super alloys, molybdenum, molybdenum-copper and particulate composites

At BRM, we specialize in stainless steels, low-alloy steels, and MIM-specific alloys. In addition, we can provide special or custom materials for any property requirement.

Contact us about your special metal options and we can manufacture your precision MIM parts from many other materials.


Stainless Steel

The Metal Injection Molding (MIM) process allows for high densities that improve the strength, ductility and corrosion resistance of stainless steels. All of these materials are made from pre-alloyed or elemental blend stainless steels with different grades of austenite, ferrite, martensite and precipitation hardening.

Stainless Steel 316L

Stainless steel 316L (UNS No. S31603) is widely used because of its high creep resistance, excellent formability, high corrosion resistance and pitting resistance. This metal also has excellent elongation and ductility and is non-magnetic. Parts of this metal are used in the electronics, marine and medical industries. mim stainless steel 316L is safe for food and water storage due to its high strength and corrosion resistance properties. These properties resist potential damage and chronic corrosion when in contact with acids. The low carbon and high alloy consistency ensure that MIM 316L is well suited for food grade applications. BRM is widely used in 316L stainless steel cases, electronic components, straps, etc. to ensure its good surface appearance and corrosion resistance.

Stainless Steel 316L Composition

Stainless steel 316L

Iron

Nickel

Molybdenum

Silicon

Carbon

Chromium

Phosphorus

Manganese

Nitrogen

Sulfur

Percent by Weight

BaL.

10.00-14.00

2.00-3.00

0.75

0.03

16.00-18.00

0.045

2.00

0.10

0.03

Stainless Steel 316L Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

Impact Strength

Hardness 

Elongation(% in 25.4mm)

Stainless steel 316L

≥7.85g/cm3

≥450 Mpa

≥140Mpa

190J

100-150 HV10

≥40%

Stainless Steel 304

304 stainless steel (UNS No. S30400) has similar mechanical properties to 316L, but its corrosion resistance is lower than 316L. in addition, its material price is lower than 316L.

Stainless Steel 304 Composition

Stainless steel 304

Iron

Nickel

Silicon

Carbon

Chromium

Phosphorus

Manganese

Nitrogen

Sulfur

Percent by Weight

BaL.

8.00-11.00

1.00

0.08

18.00-20.00

0.035

2.00

0.10

0.03

Stainless Steel 304 Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

Hardness 

Elongation(% in 25.4mm)

Stainless steel 304

≥7.75g/cm3

≥480Mpa

≥160Mpa

100-150 HV10

≥40%

Stainless Steel 420

Stainless steel 420 (UNS No. S42000) is a combination of high strength, hardness and wear resistance with moderate corrosion resistance. This martensitic grade stainless steel is magnetic and has low deformation after vacuum heat treatment. It is always used in automotive, aerospace, cutlery and tooling applications.

Stainless Steel 420 Composition

Stainless steel 420

Iron

Silicon

Carbon

Chromium

Phosphorus

Manganese

Sulfur

Percent by Weight

BaL.

1.00

0.15

12.00-14.00

0.040

1.00

0.030

Stainless Steel 420 Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

ImpactStrength

Hardness 

Elongation(% in 25.4mm)

Stainless Steel 420

≥7.55g/cm3

≥750Mpa

≥600Mpa

82J

30-39HRC

≥1%

Stainless Steel 440C

440C stainless steel (UNS No. S44004) is a martensitic grade, an alloy with excellent strength, hardness and wear resistance. This stainless steel is used for high strength, hardness and wear resistance requirements, such as automotive, hand tools and sports equipment

Stainless Steel 440C Composition

Stainless steel 440C

Iron

Silicon

Carbon

Chromium

Manganese

Molybdenum

Percent by Weight

BaL.

1.00

0.95-1.2

16.00-18.00

1.00

0.75

Stainless Steel 440C Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

ImpactStrength

Hardness

Elongation(% in 25.4mm)

Stainless steel 440C

≥7.50g/cm3

≥700Mpa

≥600Mpa

115J

30-39 HRC

≥1%

Stainless Steel 17-4PH

17-4PH stainless steel (UNS No. S17400) is a precipitation hardening grade, and this alloy provides a good balance between corrosion resistance and strength. Its hardness can be varied to different strength levels depending on the heat treatment temperature.

Stainless Steel 17-4PH Composition

Stainless Steel 17-4 PH

Iron

Nickel

Silicon

Carbon

Chromium

Niobium

Manganese

Copper

Sulfur

Percent by Weight

BaL.

3.00-5.00

1.00

0.07

15.50-17.50

0.15-0.45

1.00

3.00-5.00

0.03

Due to the low carbon content in 17-4PH stainless steel, it has better corrosion resistance than 400 series stainless steel. A wide range of hardness and properties can be obtained by varying the temperature during heat treatment. This encourages its widespread use in the aircraft, dental, medical and surgical industries.

Stainless Steel 17-4PH Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

ImpactStrength

Hardness 

Elongation(% in 25.4mm)

Stainless Steel 17-4 PH (Sintered)

≥7.65g/cm3

≥950Mpa

730Mpa

140J

25~30 HRC

≥3%

Stainless Steel 17-4PH Mechanical Properties(H900)

Material

Density

Tensile Strength

Yield Strength(0.2%)

ImpactStrength

Hardness 

Elongation(% in 25.4mm)

stainless steel 17-4 PH H900

7.7g/cm3

1206Mpa

1089Mpa

140J

40HRC

9%

Stainless Steel 17-4PH Mechanical Properties(H1100)

Material

Density

Tensile Strength

Yield Strength(0.2%)

ImpactStrength

Hardness 

Elongation(% in 25.4mm)

Stainless steel  17-4 PH H1100

7.7g/cm3

1000Mpa

910Mpa

140J

34HRC

12%

P.A.N.A.C.E.A.

P.A.N.A.C.E.A., also known as X15 CrMnMoM17-11-3, is a non-magnetic nickel-free stainless steel that is widely used in the consumer electronics industry.

P.A.N.A.C.E.A. Composition

P.A.N.A.C.E.A. 

Iron

Nickel

Molybdenum

Manganese

Carbon

Chromium

Nitrogen

Sulfur

Phosphorus

Percent by Weight

Bla.

0.0-0.1

3.0-3.5

10.0-12.0

0.0-0.2

16.5-17.5

0.75-0.90

0.00-0.03

0.00-0.045

P.A.N.A.C.E.A. Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

Hardness(as sintered)

Hardness(heat treated)

Elongation (% in 25.4mm)

P.A.N.A.C.E.A. 

≥7.50g/cm3

≥1090Mpa

≥690Mpa

300HV10

270HV10

≥35%

Low Alloy Steel

Iron-based alloys, also known as low-alloy steels, are commonly used in structural applications because of their high hardness and performance strength.

MIM-4605

With excellent strength and good ductility through the MIM process, MIM 4605 has a wide range of applications in the automotive, consumer goods and hand tool industries.

MIM-4605 Composition

MIM-4605 

Iron

Silicon

Carbon

Nickel

Molybdenum

Percent by Weight

BaL.

1.00

0.40-0.60

1.50-2.50

0.20-0.50

MIM-4605 Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

ImpactStrength

Hardness 

Elongation (% in 25.4mm)

MIM-4605 

≥7.50g/cm3

≥600Mpa

≥400Mpa

70J

≥90 HV10

≥5%

The alloy can be hardened and tempered for heat treatment to obtain various strengths and wear resistance. In general, we can produce the following low and high hardness special types.

MIM-4605 Low Hardness Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

ImpactStrength

Hardness 

Elongation (% in 25.4mm)

MIM-4605 

≥7.5g/cm3

1151Mpa

1034Mpa

38J

36 HRC

≥3%

MIM-4605 High Hardness Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

ImpactStrength

Hardness 

Elongation (% in 25.4mm)

MIM-4605 

≥7.5g/cm3

1655Mpa

1480Mpa

55J

48 HRC

≥2%

Fe02Ni

Fe02Ni Composition

MIM Fe02Ni 

Iron

Carbon

Nickel

Sulfur

Phosphorus

Percent by Weight

BaL.

0.40-0.60

1.50-2.50

0.00-0.03

0.00-0.035

Fe02Ni Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

Hardness 

Elongation (% in 25.4mm)

MIM Fe02Ni 

≥7.55g/cm3

≥260Mpa

≥150Mpa

≥90 HV10

≥3%

Fe04Ni

Fe04Ni Composition

Fe04Ni 

Iron

Carbon

Nickel

Sulfur

Phosphorus

Percent by Weight

BaL.

0.40-0.60

3.00-5.00

0.00-0.03

0.00-0.035

Fe04Ni Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

Hardness 

Elongation (% in 25.4mm)

Fe04Ni 

≥7.60g/cm3

≥630Mpa

≥380Mpa

≥90 HV10

≥3%

Fe08Ni

Fe08Ni Composition

MIM Fe08Ni 

Iron

Carbon

Nickel

Sulfur

Phosphorus

Percent by Weight

BaL.

0.40-0.60

7.0-9.0

0.00-0.03

0.00-0.035

Fe08Ni Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

Hardness 

Elongation (% in 25.4mm)

MIM Fe08Ni 

≥7.65g/cm3

630Mpa

≥400Mpa

≥90 HV10

3%

Fe03Si (Soft Magnetic)

MIM Fe03Si has low core loss and high resistance in AC and DC applications such as solenoids, armatures and relays. It is particularly suitable for net forming by the MIM method.

Fe03Si Composition

Fe03Si 

Iron

Silicon

Carbon

RoHS Compliant

Percent by Weight

BaL.

2.5-3.5

0.05

Yes

Fe3%Si Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

Hardness 

Elongation (% in 25.4mm)

Fe03Si

≥7.55g/cm3

227Mpa

151Mpa

100-180HV10

24%

Fe50Ni (Soft Magnetic)

MIM Fe50%Ni has remarkable magnetic properties of high permeability and low coercivity field and is widely used in magnetic shielding applications such as motors, switches and relays.

Fe50Ni Composition

Fe50Ni 

Iron

Nickel

Silicon

Carbon

RoHS Compliant

Percent by Weight

Bal.

49.00-51.00

1.00

0.01

Yes

Fe50Ni Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

Hardness 

Elongation (% in 25.4mm)

Permeability

Magnetization Intensity

Fe50Ni

≥7.85g/cm3

468Mpa

165Mpa

110-160 HV10

30%

μmax =28000

Js(4Ka/m)=1.36T

Fe50Co (Soft Magnetic)

MIM Fe50Co has excellent magnetism with high permeability and low coercivity field and is widely used in magnetic shielding applications such as motors, switches and relays.

Fe50Co Composition

Fe50Co 

Iron

Chromium

Cobalt

Manganese

Silicon

Carbon

Percent by Weight

Bal.

0.0-0.2

49-51

0.0-0.3

0.0-0.3

0.04

Fe50Co Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

Hardness 

Elongation (% in 25.4mm)

Permeability

Magnetization Intensity

Fe50Co

≥7.95g/cm3

≥300Mpa

≥180Mpa

80HRB

1%

μmax =5200

Js(4Ka/m)=2.0T

Specific MIM Alloy

These MIM materials are made from alloy powders or mixtures of iron with other elements such as nickel, chromium, cobalt and silicon. These alloys include some soft magnetic materials that are easily magnetized and demagnetized.

Copper Alloy

Copper alloys are widely used because of their excellent thermal and electrical conductivity. Sintered copper parts can be treated as forged copper parts in machining, plating, brazing, crimping and riveting processes. Copper alloys have a wide range of applications in miniaturization, precision design, thermal and electrical conductivity requirements. Examples include heat sinks, fuel cells, sensors and computer processor chips.

Copper Alloy Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

Hardness

Elongation (% in 25.4mm)

Thermal Conductivity 

Copper alloy

≥8.5g/cm3

≥180Mpa

60Mpa

35~45 HRB (Annealing)

30%

330W/(m.K)

Titanium Alloy

Ti-6Al-4V (UNS R56400) is the most widely used titanium in BRM. It has excellent corrosion resistance, high strength-to-weight ratio, and good fatigue resistance. It is commonly used in medical implants and prostheses.

Ti-6Al-4V Composition

Ti-6Al-4V

Titanium

Aluminum

Vanadium

Iron

Carbon

Percent by Weight

Balance

5.5-6.75

3.50-4.50

0.30

0.08

Ti-6Al-4V Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

Hardness 

Elongation (% in 25.4mm)

Ti-6Al-4V

4.5g/cm3

950Mpa

920Mpa

36 HRC

18%

Nickel Alloy

Nickel alloys are widely used in applications where electrical conductivity and corrosion resistance are required.

Nickel Alloy Mechanical Properties

Material

Density

Marco 

Nickel alloy

8.6g/cm3

53 HRC

ASTM F15

ASTM F15 (UNS 39121337), also known as Kovar, is a controlled expansion alloy for high integrity glass and ceramic-to-metal sealing. It provides hermetic seals for electronic fiber optics and electronic packaging bases such as shunts, dual in-line packages and microelectromechanical systems. kavor is made of nickel, cobalt and iron. This alloy is designed to meet the technical needs of computers, microwaves, semiconductors, and space.

ASTM F15 Composition

ASTM F15

Iron

Nickel

Molybdenum

Silicon

Carbon

Chromium

Cobalt

Copper

Niobium

Magnesium

Titanium

Zirconium

Aluminum

RoHS Compliant

Percent by Weight

BaL.

29

0.20

0.20

0.04

0.20

17

0.20

0.10

0.10

0.10

0.10

0.10

Yes

ASTM F15 Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

Hardness 

Elongation (% in 25.4mm)

ASTM F15

7.7g/cm3

450Mpa

305Mpa

65 HRB

25%

ASTM F75

ASTM F75 (UNS R30075) is a non-magnetic cobalt-chromium alloy. This alloy is widely used in the medical industry because of its excellent biocompatibility, corrosion resistance, high strength, non-magnetism and wear resistance. Cobalt-chromium alloys are widely used in orthopedics, powder manufacturing and dentistry.

ASTM F75 Composition

ASTM F75

Iron

Nickel

Molybdenum

Silicon

Carbon

Chromium

Cobalt

RoHS Compliant

Percent by Weight

0.75

1.0

5.00-7.00

1.00

0.15

26-30

BaL.

Yes

ASTM F75 Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

ImpactStrength

Hardness 

Elongation (% in 25.4mm)

ASTM F75

8.3g/cm3

992Mpa

551Mpa

177J

25 HRC

30%

ASTM F1537

ASTM F1537 (UNS R31537) has a similar composition to ASTM F75, which is also widely used in the medical industry for abrasion resistance, biocompatibility, corrosion resistance and non-magnetic properties.

ASTM F1537 Composition

ASTM F1537

Iron

Nickel

Molybdenum

Silicon

Carbon

Chromium

Cobalt

Niobium

RoHS Compliant

Percent by Weight

0.75

0.25

5.00-7.00

1.00

0.10-0.35

26-30

BaL.

1.00

Yes

ASTM F1537 Mechanical Properties

Material

Density

Tensile Strength

Yield Strength(0.2%)

ImpactStrength

Hardness 

Elongation (% in 25.4mm)

ASTM F1537

8.3g/cm3

1103Mpa

85Mpa

80J

32 HRC

27%


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