Compare
- Alloying route and key chemistry
- Particle-size distribution
- Apparent density and flow
- Compaction pressure and green density
Alloyed Steel Powder
Five alloy routes for powder metallurgy qualification: pre-alloyed, molybdenum-alloyed, free-cutting, phosphorus-alloyed and diffusion-alloyed. Compare fifteen specified grades, including separate specification and typical-value data for D3, D4 and D5. Actual batch results are provided in the shipment COA.
Review lensPurchasing
Confirm the series scope, controlled-document status, trial route and a comparable quotation basis.
5 seriesAlloy-route comparison
15 gradesProduct specifications
D3-D5Specification + typical values
TDS + COAQualification documents
Compare the alloy route before selecting a grade.
Start with the technical series or current grade. Application suitability is confirmed only after chemistry, pressing conditions, particle profile and the controlled document set are reviewed together.
- Alloying route
- Key chemistry
- Compaction basis
- Particle profile
Selection viewOne product family. Two decision paths.
Structural PM PartsThe current Luyin site supports a diffusion-alloyed route for structural sintered parts. Final grade selection depends on the current specification and qualification conditions.
- Technical match required
Current-grade ReplacementCompare the supplier grade, alloying route, chemistry, particle profile and compaction basis before recommending an equivalent review route.
- Current TDS or COA required
New PM SpecificationStart from the target chemistry, part process, compaction pressure and qualification method rather than assuming a grade from the application name alone.
- Technical match required
Pre-alloyed SeriesFour grades with controlled Ni, Mo and selected secondary-alloy ranges.
- LAP100.29A1
- LAP100.29A2
- LAP100.29A3
- LAP100.29A4
Molybdenum-alloyed SeriesThree grades differentiated by the referenced molybdenum range.
- LAP100.29Mo1
- LAP100.29Mo2
- LAP100.29Mo3
Free-cutting SeriesTwo sulfur-controlled grades in the current Luyin product sheet.
- LAP100.29S1
- LAP100.29S2
Phosphorus-alloyed SeriesOne phosphorus-alloyed grade in the current Luyin product sheet.
- LAP100.29P1
Diffusion-alloyed SeriesFive diffusion-alloyed grades. D3, D4 and D5 include specification limits and separately labelled typical values.
- LAP100.29D1
- LAP100.29D2
- LAP100.29D3
- LAP100.29D4
- LAP100.29D5
Compare all fifteen grades in the product specifications below. Typical values are labelled separately; actual batch results are provided in the shipment COA.
Receive
- Recommended series or review route
- Applicable technical data sheet
- Sample and trial proposal
- COA and export-document plan
Qualify
- Current-grade comparison
- Evidence gaps clearly identified
- Batch release basis confirmed
- Initial response within 24 hours
Product specifications
Fifteen grades across five alloy routes, with complete chemistry and physical specifications. D3, D4 and D5 include separate specification and typical-value rows. Check the 600 MPa or 490 MPa condition alongside every green-density value.
Product specification limits; actual batch results are provided in the shipment COA.
Chemistry and particle-size values are percentages. ≤ indicates a maximum; ≥ indicates a minimum. A dash or “Not stated” follows an unspecified source entry and does not mean zero. Select a grade to include it in your enquiry.
Scroll tables sideways to view all columns. The grade stays visible as you compare.
Pre-alloyed series 4 grades
| Grade | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| LAP100.29A1 | ≤0.01 | ≤0.05 | ≤0.15 | ≤0.020 | ≤0.015 |
| LAP100.29A2 | ≤0.01 | ≤0.05 | 0.20-0.50 | ≤0.020 | ≤0.015 |
| LAP100.29A3 | ≤0.01 | ≤0.05 | ≤0.15 | ≤0.020 | ≤0.015 |
| LAP100.29A4 | ≤0.01 | ≤0.05 | 0.35-0.55 | ≤0.020 | ≤0.015 |
| Grade | Cr | Ni | Mo | Co | Cu | HL (hydrogen loss) | TFe |
|---|---|---|---|---|---|---|---|
| LAP100.29A1 | - | 1.70-2.00 | 0.40-0.60 | - | - | ≤0.20 | Balance |
| LAP100.29A2 | 0.10-0.30 | 0.50-0.90 | 0.35-0.65 | 0.30-0.50 | ≤0.50 | ≤0.25 | Balance |
| LAP100.29A3 | - | 3.80-4.20 | 0.40-0.60 | - | - | - | Balance |
| LAP100.29A4 | - | 1.30-1.55 | 1.15-1.40 | - | - | ≤0.25 | Balance |
| Grade | Apparent density g/cm³ | Flow rate s/50 g | Green density g/cm³ · test pressure | Rattler value % |
|---|---|---|---|---|
| LAP100.29A1 | 2.90-3.15 | ≤28 | ≥6.90 at 600 MPa | ≤1 |
| LAP100.29A2 | 2.90-3.15 | ≤28 | ≥6.85 at 600 MPa | ≤1 |
| LAP100.29A3 | 2.90-3.15 | ≤28 | ≥6.75 at 600 MPa | ≤1 |
| LAP100.29A4 | 2.90-3.20 | ≤28 | ≥6.65 at 490 MPa | ≤1 |
| Grade | 180-200 μm | 150-180 μm | 45-150 μm | < 45 μm |
|---|---|---|---|---|
| LAP100.29A1 | ≤1 | ≤10 | Balance | 10 ~ 30 |
| LAP100.29A2 | ≤1 | ≤10 | Balance | 10 ~ 30 |
| LAP100.29A3 | ≤1 | ≤10 | Balance | 10 ~ 30 |
| LAP100.29A4 | ≤1 | ≤10 | Balance | 10 ~ 30 |
Molybdenum-alloyed series 3 grades
| Grade | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| LAP100.29Mo1 | ≤0.01 | ≤0.05 | ≤0.15 | ≤0.020 | ≤0.015 |
| LAP100.29Mo2 | ≤0.01 | ≤0.05 | ≤0.15 | ≤0.020 | ≤0.015 |
| LAP100.29Mo3 | ≤0.01 | ≤0.05 | ≤0.15 | ≤0.020 | ≤0.015 |
| Grade | Cr | Ni | Mo | Co | Cu | HL (hydrogen loss) | TFe |
|---|---|---|---|---|---|---|---|
| LAP100.29Mo1 | - | - | 0.50-0.70 | - | - | - | Balance |
| LAP100.29Mo2 | - | - | 0.80-1.00 | - | - | - | Balance |
| LAP100.29Mo3 | - | - | 1.40-1.60 | - | - | - | Balance |
| Grade | Apparent density g/cm³ | Flow rate s/50 g | Green density g/cm³ · test pressure | Rattler value % |
|---|---|---|---|---|
| LAP100.29Mo1 | 2.90-3.15 | ≤28 | ≥7.00 at 600 MPa | ≤1 |
| LAP100.29Mo2 | 2.90-3.15 | ≤28 | ≥7.00 at 600 MPa | ≤1 |
| LAP100.29Mo3 | 2.90-3.15 | ≤28 | ≥7.00 at 600 MPa | ≤1 |
| Grade | 180-200 μm | 150-180 μm | 45-150 μm | < 45 μm |
|---|---|---|---|---|
| LAP100.29Mo1 | ≤1 | ≤10 | Balance | 10 ~ 30 |
| LAP100.29Mo2 | ≤1 | ≤10 | Balance | 10 ~ 30 |
| LAP100.29Mo3 | ≤1 | ≤10 | Balance | 10 ~ 30 |
Free-cutting series 2 grades
| Grade | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| LAP100.29S1 | ≤0.02 | ≤0.05 | 0.10-0.30 | ≤0.020 | 0.30-0.40 |
| LAP100.29S2 | ≤0.02 | ≤0.05 | 0.10-0.30 | ≤0.020 | 0.20-0.30 |
| Grade | Cr | Ni | Mo | Co | Cu | O (oxygen) | TFe |
|---|---|---|---|---|---|---|---|
| LAP100.29S1 | - | - | - | - | - | ≤0.25 | ≥99 |
| LAP100.29S2 | - | - | - | - | - | ≤0.25 | ≥99 |
O is oxygen content for these free-cutting grades; it is a different property from hydrogen loss (HL).
| Grade | Apparent density g/cm³ | Flow rate s/50 g | Green density g/cm³ · test pressure | Rattler value % |
|---|---|---|---|---|
| LAP100.29S1 | 2.90-3.10 | ≤30 | ≥6.70 at 490 MPa | - |
| LAP100.29S2 | 2.90-3.10 | ≤30 | ≥6.70 at 490 MPa | - |
| Grade | 180-200 μm | 150-180 μm | 45-150 μm | < 45 μm |
|---|---|---|---|---|
| LAP100.29S1 | ≤1 | ≤10 | Balance | 10 ~ 30 |
| LAP100.29S2 | ≤1 | ≤10 | Balance | 10 ~ 30 |
Phosphorus-alloyed series 1 grade
| Grade | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| LAP100.29P1 | ≤0.05 | ≤0.05 | ≤0.15 | 0.45-0.65 | ≤0.015 |
| Grade | Cr | Ni | Mo | Co | Cu | HL (hydrogen loss) | TFe |
|---|---|---|---|---|---|---|---|
| LAP100.29P1 | - | - | - | - | - | ≤0.20 | ≥99 |
| Grade | Apparent density g/cm³ | Flow rate s/50 g | Green density g/cm³ · test pressure | Rattler value % |
|---|---|---|---|---|
| LAP100.29P1 | 3.00-3.30 | ≤28 | ≥7.06 at 600 MPa | ≤1 |
| Grade | 180-200 μm | 150-180 μm | 45-150 μm | < 45 μm |
|---|---|---|---|---|
| LAP100.29P1 | ≤1 | ≤10 | Balance | 15 ~ 30 |
Diffusion-alloyed series 5 grades
| Grade | Basis | C | Si | Mn | P | S |
|---|---|---|---|---|---|---|
| LAP100.29D1 | Specification | ≤0.015 | ≤0.05 | ≤0.15 | ≤0.015 | ≤0.015 |
| LAP100.29D2 | Specification | ≤0.015 | ≤0.05 | ≤0.15 | ≤0.015 | ≤0.015 |
| LAP100.29D3 | Specification | ≤0.015 | ≤0.05 | ≤0.15 | ≤0.015 | ≤0.015 |
| LAP100.29D3 | Typical value | 0.005 | 0.03 | 0.10 | 0.011 | 0.005 |
| LAP100.29D4 | Specification | ≤0.015 | ≤0.05 | ≤0.15 | ≤0.015 | ≤0.015 |
| LAP100.29D4 | Typical value | 0.005 | 0.03 | 0.10 | 0.011 | 0.005 |
| LAP100.29D5 | Specification | ≤0.015 | ≤0.05 | ≤0.15 | ≤0.015 | ≤0.015 |
| LAP100.29D5 | Typical value | 0.005 | 0.03 | 0.10 | 0.011 | 0.005 |
| Grade | Basis | Ni | Mo | Cu | HL (hydrogen loss) | TFe |
|---|---|---|---|---|---|---|
| LAP100.29D1 | Specification | 1.70-2.10 | 0.50-0.70 | 1.60-1.90 | ≤0.15 | Balance |
| LAP100.29D2 | Specification | 3.80-4.20 | 0.50-0.70 | 1.60-1.90 | ≤0.15 | Balance |
| LAP100.29D3 | Specification | 3.80-4.20 | 1.40-1.60 | 1.80-2.20 | ≤0.15 | Balance |
| LAP100.29D3 | Typical value | 3.90 | 1.51 | 1.90 | 0.10 | - |
| LAP100.29D4 | Specification | 1.4-1.6 | 0.50-0.70 | 1.80-2.20 | ≤0.15 | Balance |
| LAP100.29D4 | Typical value | 1.52 | 0.58 | 1.93 | 0.10 | - |
| LAP100.29D5 | Specification | 0.9-1.1 | 1.40-1.60 | 0.9-1.1 | ≤0.15 | Balance |
| LAP100.29D5 | Typical value | 1.03 | 1.49 | 1.05 | 0.10 | - |
| Grade | Basis | Apparent density g/cm³ | Flow rate s/50 g | Green density g/cm³ · test pressure | Rattler value % |
|---|---|---|---|---|---|
| LAP100.29D1 | Specification | 3.00-3.30 | ≤30 | ≥7.06 at 600 MPa | ≤1 |
| LAP100.29D2 | Specification | 3.00-3.30 | ≤30 | ≥7.06 at 600 MPa | ≤1 |
| LAP100.29D3 | Specification | 3.00-3.30 | ≤30 | ≥7.00 at 600 MPa | - |
| LAP100.29D3 | Typical value | 3.05 | 25.8 | 7.08 at 600 MPa | - |
| LAP100.29D4 | Specification | 3.00-3.30 | ≤30 | ≥7.00 at 600 MPa | - |
| LAP100.29D4 | Typical value | 3.05 | 25.8 | 7.10 at 600 MPa | - |
| LAP100.29D5 | Specification | 3.00-3.30 | ≤30 | ≥7.00 at 600 MPa | - |
| LAP100.29D5 | Typical value | 3.05 | 26.3 | 7.09 at 600 MPa | - |
| Grade | Basis | 180-200 μm | 150-180 μm | 106-150 μm | 75-106 μm | 45-150 μm | < 45 μm |
|---|---|---|---|---|---|---|---|
| LAP100.29D1 | Specification | ≤1 | ≤10 | - | - | Balance | 10 ~ 30 |
| LAP100.29D2 | Specification | ≤1 | ≤10 | - | - | Balance | 10 ~ 30 |
| LAP100.29D3 | Specification | ≤1 | ≤10 | Balance | Balance | Balance | 15—30 |
| LAP100.29D3 | Typical value | 0 | 2.5 | 21.2 | 25.9 | 30.1 | 20.3 |
| LAP100.29D4 | Specification | ≤1 | ≤10 | Balance | Balance | Balance | 15—30 |
| LAP100.29D4 | Typical value | 0 | 1.8 | 20.8 | 27.9 | 28.6 | 20.9 |
| LAP100.29D5 | Specification | ≤1 | ≤10 | Balance | Balance | Balance | 15—30 |
| LAP100.29D5 | Typical value | 0 | 3.7 | 28.7 | 27.4 | 24.0 | 16.2 |
The supplied specification labels one sieve fraction “45–150 μm”, which overlaps the “106–150 μm” and “75–106 μm” columns. The original labels and values are shown here; confirm the intended intervals when specifying this distribution. Typical values are examples, not specification limits.
Two distinct alloying routes.
Pre-alloying introduces alloy additions before atomization. Diffusion alloying starts from a selected base powder and adds a separate diffusion treatment.
Water-atomized pre-alloyed steel powder
Read process steps
Feed materials
Steel scrap
Alloy additions
Both feed materials enter the melting stage.
Follow the numbered sequence.
- Steel melting
- Water atomization
- Wet magnetic separation
- Dewatering
- Drying
- Cooling
- Magnetic separation
- Screening
- Batch blending
- Raw atomized powder
- Secondary reduction
- Grinding
- Screening
- Batch blending
- Water-atomized pre-alloyed steel powder
Possible downstream routes for this powder
Downstream processing is selected for the required product; it is not an additional step for every grade.
Diffusion-alloyed steel powder
Read process steps
Alternative base powders
- Water-atomized pure iron powder
- Water-atomized pre-alloyed steel powder
Select the base powder for the formulation; these are alternative starting routes.
Follow the numbered sequence.
- Add alloying materialsNi, Mo, Cu and other specified additions
- Pre-mixing
- Diffusion treatment
- Grinding and screening
- Diffusion-alloyed steel powder
Possible downstream routes for this powder
Downstream processing is selected for the required product; it is not an additional step for every grade.
Production sequence: catalogue, printed pages 12–15. Process steps are shown separately from product qualification and batch release. Actual batch results follow the COA.
Compare all eight production routesEvidence for alloy-route qualification.
Technical review can include alloying elements, impurities, particle-size distribution, powder behaviour, compaction basis and batch release evidence.
Technical data sheetBatch certificate of analysisCurrent-grade comparisonPacking and shipping documents
Match an alloy route to your part and process.
Send the current supplier grade or target specification. Purchasing and technical review use the same brief.
- Purchasing receives
- Series scope, trial route and quotation inputs
- Technical receives
- Comparable route, evidence gaps and qualification path
- Response commitment
- Initial technical response within 24 hours
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Product family: Alloyed Steel Powder
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