Iron: Powdered Metal Parts and Components
CMT produces components from a wide variety of powder metal iron and steel alloys, which are generally known as ferrous powder metal alloys, or ferrous sintered metal alloys.
These include admixed elemental ferrous alloys, diffusion alloyed steels, pre-alloyed low alloy steels, stainless steels, and tool steels.
Admixed, Elemental Ferrous Alloys
Pure Fe can be used for soft magnetic and low strength structural applications. When Fe is admixed with C, Cu, Ni, P, or Si, and processed by powder metallurgy, the result is carbon, copper, nickel, phosphorus, or silicon steels. These steels are used for structural and/or soft magnetic applications. Powder metallurgy permits processing of alloys with chemistries that are very difficult to process by other metalworking technologies.
Diffusion Alloyed Steels
- Pure Fe is typically partially pre-alloyed (“diffusion alloyed”) with Ni, Cu, and Mo.
- Graphite (C) is subsequently admixed with the resulting diffusion alloyed steel powder to produce the required C level in the final product. Also, other elemental powder may be admixed at this stage.
- Diffusion alloyed steels offer the benefits of a soft Fe core, for compressibility, together with alloying elements that are partially sintered/diffused into the core.
- Diffusion alloyed steels are typically used in medium to high strength structural applications.
- Strength and wear resistance can be further enhanced by heat treating these steels.
- MPIF STD 35 material designation is FD.
Prealloyed Low Alloy Steels
- Typically, Fe is fully alloyed with Ni, Mo, Cu and/or Mn. Each powder particle has the same alloy chemistry.
- Graphite (C) is subsequently admixed with the prealloyed powder. Other elemental powders may also be added at this stage.
- Prealloyed low alloy steels are used in high strength structural applications.
- Strength and wear resistance can be further enhanced by heat treatment.
- Some of these steels can be sinter-hardened.
- MPIF STD 35 material designations are FL, FLN, FLN2, FLN4, FLN6 and FLNC.
Iron and Ferrous Alloys
- MPIF F-0005-25
- Tensile Strength 38,000PSI
- Yield Strength 28,000PSI
- Elongation 1.5% per inch
- Apparent Hardness HRC 55
- Recommendations: Used where moderate strength and hardness with extensive machining is required. Increased strength by hardening and tempering.
- Equivalent ASTM: B 783-25
- MPIF F-0005-25 HT
- Tensile Strength 70,000PSI
- Yield Strength 28,000PSI
- Elongation <0.5% per inch
- Apparent Hardness HRC 22
- Recommendations: Used where moderate strength and hardness with extensive machining is required. Increased strength by hardening and tempering.
- Equivalent ASTM: B 783-25
- MPIF FC-2000-40
- Tensile Strength 40,000PSI
- Yield Strength 32,000PSI
- Elongation 1% per inch
- Apparent Hardness HRB 40
- Recommendations: Material used for both bearings & structural parts. Excellent abrasion resistance.
- FN-5000
- Tensile Strength 38,000PSI
- Yield Strength N/A
- Elongation 12% per inch
- Apparent Hardness HRB 20-25
- Recommendations: Best material for soft magnetic applications with very low coercive forces.
- FY-4500
- Tensile Strength 45,000PSI
- Yield Strength 30,000PSI
- Elongation 7% per inch
- Apparent Hardness HRB 35
- Recommendations: Very good material for soft magnetic applications.
- Equivalent MPIF F-0000-20 Modified, ASTM: B 783-93
- MPIF FLC-460850HT
- Tensile Strength 60,000PSI
- Yield Strength 60,000PSI
- Elongation <1% per inch
- Recommendations: High strength, high hardness, in a sintered condition. Referred to as “sinter-hardened” material. Used for gears, sprockets and synchronizer hubs.
- Equivalent ASTM: B 783-93
- MPIF FN-0205-25
- Tensile Strength 50,000PSI
- Yield Strength 30,000PSI
- Elongation 2.5% per inch
- Recommendations: Used for moderate strength and wear resistance, good toughness. Suitable for high strength structural parts by hardening and tempering.
- Equivalent ASTM: B 783-83
- MPIF FN-0205-25 HT
- Tensile Strength 120,000PSI
- Yield Strength 30,000PSI
- Elongation <0.5% per inch
- Apparent Hardness HRC 30
- Recommendations: Used for moderate strength and wear resistance, good toughness. Suitable for high strength structural parts by hardening and tempering.
- Equivalent ASTM: B 783-83
- MPIF FN-0405-35
- Tensile Strength 60,000PSI
- Yield Strength 40,000PSI
- Elongation 3% per inch
- Apparent Hardness HRB 70
- Recommendations: High tensile strength and toughness in a sintered condition. Good for high strength structural parts by hardening & tempering.
- Equivalent ASTM: B 783-93
- MPIF FN-0405-35 HT
- Tensile Strength 130,000PSI
- Yield Strength 40,000PSI
- Elongation <0.5% per inch
- Apparent Hardness HRB 30
- Recommendations: High tensile strength and toughness in a sintered condition. Good for high strength structural parts by hardening & tempering.
- Equivalent ASTM: B 783-93
- MPIF FL-4205-100HT
- Tensile Strength 110,000PSI
- Yield Strength 110,000PSI
- Elongation <.05% per inch
- Apparent Hardness HRC 35
- Recommendations: This material is typically used when high performance materials capable of being heat-treated are required. Provides high strength and wear resistance after hardening and tempering.
- Equivalent ASTM: B 783-93
- MPIF FC-0205-40
- Tensile Strength 50,000PSI
- Yield Strength 45,000PSI
- Elongation 1% per inch
- Apparent Hardness HRB 60
- Recommendations; Suitable for general structural parts when secondary machining is required.
- Equivalent ASTM: B 783-93
- MPIF FC-0205-40 HT
- Tensile Strength 80,000PSI
- Yield Strength 45,000PSI
- Elongation <0.5% per inch
- Apparent Hardness HRB 30
- Recommendations: Suitable for general structural parts when secondary machining is required.
- Equivalent ASTM: B 783-93
- MPIF DC-0208-60
- Tensile Strength 75,000PSI
- Yield Strength 65,000PSI
- Elongation <1.0% per inch
- Apparent Hardness HRB 80
- Recommendations: Material used for higher strength structural parts. Good abrasion resistance. Increased strength by hardening and tempering.
- Equivalent ASTM: B 783-93, SAE 864 grade 1 class 3
- MPIF DC-0208-60 HT
- Tensile Strength 105,000PSI
- Yield Strength 65,000PSI
- Elongation <0.5% per inch
- Apparent Hardness HRB 40
- Recommendations: Material used for higher strength structural parts. Good abrasion resistance. Increased strength by hardening and tempering.
- Equivalent ASTM: B 783-93, SAE 864 grade 1 class 3
- MPIF FN-0208-35
- Tensile Strength 55,000PSI
- Yield Strength 40,000PSI
- Elongation 1.5% per inch
- Apparent Hardness HRB 70
- Recommendations: Suitable for high strength structural parts by hardening and tempering and retaining toughness.
- Equivalent ASTM: B 783-93
- MPIF FN-0208-35 HT
- Tensile Strength 120,000PSI
- Yield Strength 40,000PSI
- Elongation <0.5% per inch
- Apparent Hardness HRB 30
- Recommendations; Suitable for high strength structural parts by hardening and tempering and retaining toughness.
- Equivalent ASTM: B 783-93
- MPIF FC-0208-50
- Yield Strength 50,oooPSI
- Hardness HRB 73
- Density 6.8 g/pc