PM Metal Powders for Automotive, Machinery, Tooling, Aerospace & Powder Metallurgy Components
Product Overview
Stainless Steel, Low-Alloy Steel, Tool Steel, Fe-Ni, Co-Based and Specialty Alloy Powders for Press-and-Sinter Powder Metallurgy
GREENSTONE PM Metal Powders are engineered for conventional powder metallurgy (PM), press-and-sinter manufacturing, powder compaction, sintered structural components and specialty powder-metallurgy applications.
The portfolio covers a broad range of internationally recognized material systems, including 15-5PH, 17-4PH, 410, 430 and 440C stainless steels; 4605 and 8620 low-alloy steels; Fe-Ni alloys; M2, M3-2, T15 and H13 tool steels; KOVAR (4J29) controlled-expansion alloy; FeCrAl alloy; and cobalt-based wear-resistant alloys.
GREENSTONE PM powders are produced with controlled chemical composition, particle-size distribution, apparent density, tap density and flowability to support stable powder filling, compaction, sintering and subsequent heat-treatment processes.
The powders are suitable for manufacturing gears, sprockets, bushings, bearings, structural parts, automotive components, industrial machinery parts, wear-resistant components, cutting and tooling components, electrical parts and precision engineering components.
Typical industries include automotive, industrial machinery, aerospace, power tools, electrical equipment, energy, transportation, electronics and general precision manufacturing.
Stainless Steel PM Powders
GREENSTONE stainless steel PM powders provide different combinations of corrosion resistance, mechanical strength, hardness, wear resistance and magnetic properties.
15-5PH and 17-4PH precipitation-hardening stainless steels are suitable for high-strength structural components requiring good corrosion resistance and heat-treatment capability.
410 martensitic stainless steel provides good strength and moderate corrosion resistance and can be heat treated to increase hardness.
430 ferritic stainless steel offers corrosion resistance combined with magnetic properties and is suitable for electrical, appliance and general industrial components.
440C high-carbon stainless steel provides high hardness and wear resistance for bearings, wear components and precision mechanical parts.
Low-Alloy Steel PM Powders
GREENSTONE low-alloy steel powders include material systems such as 4605 and 8620, developed for structural powder metallurgy components requiring strength, toughness and heat-treatment capability.
These powders are particularly suitable for:
- Automotive gears, sprockets and transmission components
- Mechanical structural parts
- Bushings and hubs
- Power-tool components
- Industrial machinery parts
- Wear-resistant and load-bearing components
Selected grades can undergo carburizing, quenching, tempering or other heat treatments according to final performance requirements.
Tool Steel & High-Speed Steel PM Powders
GREENSTONE provides M2, M3-2, T15 and H13 powders for powder-metallurgy applications requiring high hardness, wear resistance, hot hardness and thermal stability.
M2 is a widely used molybdenum high-speed steel offering a strong balance of toughness and wear resistance.
M3-2 provides higher carbon and vanadium content than conventional M2, improving wear resistance for demanding tooling applications.
T15 is a high-alloy tungsten-cobalt high-speed steel designed for applications requiring exceptional hot hardness and abrasion resistance.
H13 hot-work tool steel combines thermal-fatigue resistance, toughness and elevated-temperature strength.
Typical applications include cutting tools, forming tools, wear components, industrial tooling, high-temperature tooling and specialty mechanical components.
Fe-Ni Alloy PM Powders
Iron-nickel PM powders provide combinations of mechanical strength, toughness, magnetic properties and controlled thermal characteristics.
Different nickel concentrations can be supplied depending on the required performance. These materials can be used for precision mechanical components, magnetic parts, structural components and specialty engineering applications.
KOVAR (4J29) Controlled-Expansion Alloy Powder
KOVAR (4J29) is an Fe-Ni-Co controlled-expansion alloy used where dimensional compatibility between metals, glass and ceramics is required.
Its controlled coefficient of thermal expansion makes it particularly suitable for:
- Glass-to-metal sealing
- Electronic packages
- Hermetic components
- Sensor housings
- Vacuum electronics
- Semiconductor packaging
- Aerospace electronic components
Powder metallurgy enables complex KOVAR components to be manufactured with reduced machining requirements.
FeCrAl High-Temperature Alloy Powder
FeCrAl iron-chromium-aluminum alloy powder provides excellent high-temperature oxidation resistance and electrical resistance.
The formation of a protective alumina-rich surface layer at elevated temperature makes FeCrAl suitable for heating elements, high-temperature porous components, filtration structures, burner components and industrial thermal equipment.
Cobalt-Based Wear-Resistant PM Powders
Cobalt-based powder metallurgy alloys are available for components requiring combinations of high-temperature strength, wear resistance, corrosion resistance and oxidation resistance.
They are suitable for demanding components used in aerospace, energy, tooling and industrial machinery.
Final alloy selection should be based on operating temperature, wear mechanism, corrosion environment and mechanical loading.
Key Advantages
Stable Powder Compaction
Controlled particle-size distribution and apparent density support uniform die filling and repeatable compaction.
Good Flowability
Optimized powder characteristics improve feeding and filling efficiency during automated PM production.
High Sintered Density
Controlled chemistry and particle distribution promote reliable densification and mechanical properties after sintering.
Wide Alloy Selection
One portfolio covers stainless steels, low-alloy steels, tool steels, Fe-Ni alloys, controlled-expansion alloys, FeCrAl and cobalt-based materials.
Heat-Treatable Materials
Selected PM alloys support carburizing, quenching, tempering, precipitation hardening and other post-sintering treatments.
High Wear Resistance
Tool steels, high-speed steels, high-carbon stainless steels and cobalt-based alloys are available for demanding wear applications.
Mass-Production Capability
PM technology enables economical high-volume manufacturing of near-net-shape components while reducing machining and material waste.
Custom Powder Specifications
GREENSTONE can provide customized particle-size distributions, chemical compositions and powder physical characteristics according to specific PM processes and component requirements.
Main PM Powder Portfolio
| Material Grade / System | Material Family | Key Properties | Typical Applications |
|---|---|---|---|
| 15-5PH | Precipitation-Hardening Stainless Steel | High strength, corrosion resistance, heat treatable | Aerospace, automotive, structural components |
| 17-4PH | Precipitation-Hardening Stainless Steel | High strength, hardness, corrosion resistance | Machinery, automotive, aerospace components |
| 410 | Martensitic Stainless Steel | Heat treatable, good strength | Mechanical and industrial components |
| 430 | Ferritic Stainless Steel | Magnetic, corrosion resistant | Electrical and industrial components |
| 440C | High-Carbon Stainless Steel | High hardness and wear resistance | Bearings, wear parts, precision components |
| 4605 | Low-Alloy Steel | Strength, toughness, heat-treatment response | Automotive and structural components |
| 8620 | Ni-Cr-Mo Low-Alloy Steel | Toughness and carburizing capability | Gears, transmission and mechanical parts |
| M2 | High-Speed Steel | Wear resistance and hot hardness | Cutting tools and wear components |
| M3-2 | High-Speed Steel | High wear resistance and hardness | Cutting and forming tools |
| T15 | Tungsten High-Speed Steel | Exceptional wear resistance and hot hardness | Heavy-duty cutting and tooling |
| H13 | Hot-Work Tool Steel | Thermal-fatigue resistance and toughness | Hot-work tooling and industrial components |
| Fe-Ni | Iron-Nickel Alloy | Strength, magnetic and thermal characteristics | Precision and specialty components |
| KOVAR / 4J29 | Fe-Ni-Co Controlled-Expansion Alloy | Controlled thermal expansion | Hermetic seals and electronic packaging |
| FeCrAl | Fe-Cr-Al High-Temperature Alloy | Oxidation and electrical resistance | Heating and high-temperature components |
| Co-Based Alloy | Cobalt Alloy | Wear, corrosion and heat resistance | Aerospace, energy and industrial wear parts |
Typical Chemical Composition
| Grade | C wt.% | Cr wt.% | Ni wt.% | Mo wt.% | Other Major Elements | Fe |
|---|---|---|---|---|---|---|
| 15-5PH | ≤0.07 | 14–15.5 | 3.5–5.0 | — | Cu 2.5–4.5, Nb 0.25–0.45 | Balance |
| 17-4PH | ≤0.07 | 15–17.5 | 3–5 | — | Cu 3–5, Nb 0.25–0.45 | Balance |
| 440C | 1.0–1.2 | 16–18 | ≤0.5 | ~0.65 | Si 0.7–0.9 | Balance |
| 430 | ≤0.10 | 16–18 | — | — | Si ≤1.0, Mn ≤1.0 | Balance |
| 410 | ≤0.15 | 12–14 | — | — | Si ≤1.0, Mn ≤2.0 | Balance |
| 4605 | 0.4–0.6 | — | 1.5–2.5 | 0.2–0.5 | Mn ≤0.5 | Balance |
| M2 | 0.78–1.05 | 3.75–4.50 | — | 4.5–5.5 | W 5.5–6.5, V 1.75–2.20 | Balance |
| M3-2 | 1.0–1.3 | 3.75–4.50 | — | 4.75–6.5 | W 5.5–6.75, V 2.75–3.25 | Balance |
| T15 | ~1.55 | ~4.0 | ≤0.30 | ≤1.0 | W ~12, V ~5, Co ~5 | Balance |
| H13 | ~0.40 | ~5.10 | ≤0.30 | ~1.30 | Si ~1.0, V ~1.0 | Balance |
| KOVAR / 4J29 | ≤0.03 | ≤0.20 | 28–30 | ≤0.20 | Co 16–18 | Balance |
| FeCrAl | ≤0.08 | 5–6* | — | — | Al 15–17* | Balance |
*FeCrAl compositions vary substantially by alloy grade; final chemistry should be specified according to the required operating conditions.
Typical Powder Physical Properties
| Material / Grade | Typical Mesh Size | Apparent Density | Tap Density | Flowability |
|---|---|---|---|---|
| 15-5PH | −100 mesh | 2.0–2.5 g/cm³ | 4.9–5.5 g/cm³ | <40 s/50 g |
| 17-4PH | −100 mesh | 2.0–2.5 g/cm³ | 4.9–5.5 g/cm³ | <40 s/50 g |
| 440C | −100 mesh | 2.0–2.5 g/cm³ | 4.8–5.5 g/cm³ | <40 s/50 g |
| 430 | −100 mesh | 2.0–2.5 g/cm³ | 4.8–5.5 g/cm³ | <40 s/50 g |
| 410 | −100 mesh | 2.0–2.5 g/cm³ | 4.8–5.5 g/cm³ | <40 s/50 g |
| Fe-Ni | −100 mesh | 2.0–2.5 g/cm³ | 4.7–5.3 g/cm³ | <40 s/50 g |
| 4605 | −100 mesh | 2.0–2.5 g/cm³ | 4.7–5.3 g/cm³ | <40 s/50 g |
| 8620 | −100 mesh | 2.0–2.5 g/cm³ | 4.7–5.3 g/cm³ | <40 s/50 g |
| M2 | −100 mesh | 2.2–2.5 g/cm³ | 5.0–5.5 g/cm³ | <40 s/50 g |
| M3-2 | −100 mesh | 2.2–2.5 g/cm³ | 5.0–5.5 g/cm³ | <40 s/50 g |
| T15 | −100 mesh | 2.3–2.6 g/cm³ | 5.0–5.5 g/cm³ | <40 s/50 g |
| H13 | −100 mesh | 2.2–2.5 g/cm³ | 5.0–5.5 g/cm³ | <40 s/50 g |
| FeCrAl | −50/+200 mesh | 1.3–1.7 g/cm³ | 3.0–4.0 g/cm³ | <80 s/50 g |
General Supply Specifications
| Parameter | GREENSTONE Specification |
|---|---|
| Product Category | Powder Metallurgy (PM) Metal Powder |
| Primary Process | Pressing / Compaction + Sintering |
| Material Families | Stainless Steel, Low-Alloy Steel, Tool Steel, Fe-Ni, Fe-Ni-Co, FeCrAl, Co-Based Alloys |
| Typical Particle Size | Mainly −100 mesh; other distributions available |
| Powder Morphology | Irregular / Near-Spherical / Process-Optimized |
| Apparent Density | Alloy and particle-size dependent |
| Tap Density | Alloy and particle-size dependent |
| Flowability | Controlled according to PM processing requirements |
| Heat Treatment | Available for applicable alloy systems after sintering |
| Customization | Composition and particle-size distribution available |
| Main Components | Gears, Bushings, Bearings, Sprockets, Structural Parts, Tools, Wear Parts |
| Industries | Automotive, Machinery, Aerospace, Tooling, Electrical, Energy, Industrial Manufacturing |
| Brand | GREENSTONE |
Technical Note: The values above should be treated as typical/reference specifications. Actual chemistry, particle-size distribution, apparent density, tap density, flowability, oxygen content and sintering characteristics depend on the selected alloy and manufacturing route. Final specifications should be confirmed according to the customer’s PM process, component design and applicable international material standard.
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