Stainless Steel & MIM Powders

Compare nine pressed stainless steel grades and six metal injection molding grades by chemistry, particle profile and powder properties. Choose the forming route first, then use the specifications to prepare a grade-specific enquiry.

9 pressed stainless grades · 6 MIM grades · shipment COA for actual batch results

Molten-metal production context for atomized powder qualification
Atomized metal powder production
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Compare grade specifications, identify the forming route and share trial quantity and delivery requirements.

15 gradesPressed PM + MIM
2 processesDifferent density measures
SpecificationsChemistry + powder properties
Batch COAActual shipment results

Start with the forming process.

Choose pressed PM or metal injection molding before comparing alloy and particle requirements. The specification tables separate the density measures and production conditions that matter to each process.

Pressed stainless steelCompare 9 grades for compacting and sintering.
Metal injection moldingCompare 6 grades, particle profiles and water/gas oxygen limits.

For a current-grade comparison, include your alloy standard, process conditions, technical data sheet and recent COA.

Product specifications

Compare 15 grades by composition and powder properties. Select a grade to include it in your enquiry.

Product specification limits; actual batch results are provided in the shipment COA.

Bal. / Bal / Balance means the balance of the stated composition or size distribution. “Not specified” marks an empty or unlisted field. A dash (-) is retained from the specification and does not mean zero.

Scroll tables sideways to view all columns. The grade stays visible as you compare.

Pressed stainless steel powders · 9 grades

Start with the alloy chemistry, then compare the sieve profile and powder behaviour for pressing and sintering. Apparent density describes loose powder, while the green-density specification below applies at 600 MPa; neither is the tap-density measure used for MIM.

Pressed stainless steel — alloy composition (%)
GradeCrNiMoCuNbFe
LS30418.0-20.08.0-12.0--Not specifiedBal
LS31616.0-18.010.0-14.02.0-3.0-Not specifiedBal
LS304L18.0-20.08.0-12.0--Not specifiedBal
LS316L16.0-18.010.0-14.02.0-3.0-Not specifiedBal
LS410L11.5-13.5---Not specifiedBal
LS430L16.0-18.0---Not specifiedBal
LS434L16.0-18.0-0.75-1.25-Not specifiedBal
LS409L10.5-13.5-≤0.30Not specified0.3-0.8Bal
LS20116.0-18.03.5-5.5Not specifiedNot specifiedNot specifiedBal
Pressed stainless steel — additional composition limits (%)
GradeSPCSiMnO
LS304≤0.03≤0.04≤0.08≤1.0≤2.0≤0.4
LS316≤0.03≤0.04≤0.08≤1.0≤2.0≤0.4
LS304L≤0.03≤0.04≤0.03≤1.0≤2.0≤0.4
LS316L≤0.03≤0.04≤0.03≤1.0≤2.0≤0.4
LS410L≤0.03≤0.04≤0.03≤1.0≤1.0≤0.4
LS430L≤0.03≤0.04≤0.03≤1.0≤1.0≤0.4
LS434L≤0.03≤0.04≤0.03≤1.0≤1.0≤0.4
LS409L≤0.03≤0.04≤0.03≤1.0≤1.0≤0.4
LS201≤0.03≤0.06≤0.15≤0.755.5-8.0≤0.4
Pressed stainless steel — sieve distribution and physical properties
Grade>150 μm (%)45–150 μm (%)<45 μm (%)Apparent density (g/cm³)Green density at 600 MPa (g/cm³)Flow rate (sec/50 g)
LS304≤1%Bal≤50%2.6-3.26.0-6.623-40
LS316≤1%Bal≤50%2.6-3.26.0-6.623-40
LS304L≤1%Bal≤50%2.6-3.26.0-6.623-40
LS316L≤1%Bal≤50%2.6-3.26.0-6.623-40
LS410L≤1%Bal≤50%2.6-3.26.0-6.623-40
LS430L≤1%Bal≤50%2.6-3.26.0-6.623-40
LS434L≤1%Bal≤50%2.6-3.26.0-6.623-40
LS409L≤1%Bal≤50%2.6-3.26.0-6.623-40
LS201≤1%Bal≤50%2.6-3.26.0-6.623-40

LS409L: the specification identifies Nb as 0.3–0.8%, although the original layout places it under the Cu heading. It is shown separately as niobium here; no copper value is specified. Nb values for other grades are not specified in this table.

Metal injection molding powders · 6 grades

Select the alloy and particle profile together with the intended feedstock, debinding and sintering process. These powders specify tap density and D50; the oxygen limits are different for water-atomized and gas-atomized powder and must be matched to the requested production route.

MIM powders — alloy composition (%)
GradeCrNiMoCuNbFe
LT304-J18.0-20.08.0-12.0---Bal.
LT304L18.0-20.08.0-12.0---Bal.
LT316L16.0-18.010.0-14.02.0-3.0--Bal.
LT17-4PH15.5-17.53.0-5.0-3.0-5.00.15-0.45Bal.
LT440C16.0-18.0≤0.5---Bal.
LTFe-2Ni-1.8-2.2-Not specified-Bal.
MIM powders — carbon, silicon and manganese (%)
GradeCSiMn
LT304-J≤0.08≤1.0≤2.0
LT304L≤0.03≤1.0≤2.0
LT316L≤0.03≤1.0≤2.0
LT17-4PH≤0.07≤1.0≤1.0
LT440C1.0-1.20.7-0.9≤1.0
LTFe-2Ni0.4-0.6≤1.0≤1.0
MIM powders — particle profile, tap density and oxygen
GradeParticle size (mesh)Tap density (g/cm³)D50 (μm)Oxygen — water atomized (ppm)Oxygen — gas atomized (ppm)
LT304-J-300, -400, -500≥4.58-12≤4000≤800
LT304L-500≥4.58-12≤4000≤800
LT316L-500≥4.58-12≤4000≤800
LT17-4PH-500≥4.58-12≤4000≤800
LT440C-500≥4.58-12≤4000≤800
LTFe-2Ni-500≥4.58-12≤4000≤800

Water-atomized oxygen limit: ≤4000 ppm. Gas-atomized oxygen limit: ≤800 ppm. The Cu value for LTFe-2Ni is not specified in the source table.

Complete atomization routes.

The catalogue documents these three atomization routes. They are shown here for process comparison; the applicable route and finishing branch must be confirmed for the selected alloy and grade.

Gas-atomized powder

Gas-atomized powder: complete illustrated process, from feed materials to finished powder. The text equivalent follows.
Follow the arrows from feed materials to finished powder. Equipment symbols are schematic.
Read process steps

Feed materials

Alloy

Follow the numbered sequence.

  1. Melting
  2. Gas atomization
  3. Screening
  4. Batch blending
  5. Finished powder

Combined water and gas atomization

Combined water and gas atomization: complete illustrated process, from feed materials to finished powder. The text equivalent follows.
Follow the arrows from feed materials to finished powder. Equipment symbols are schematic.
Read process steps

Feed materials

Alloy

Follow the numbered sequence.

  1. Melting
  2. Combined water and gas atomization
  3. Wet magnetic separation
  4. Dewatering
  5. Drying

After drying: two alternative finishing paths

With final reduction

  1. Final reduction
  2. Grinding
  3. Screening
  4. Batch blending
  5. Finished powder

Direct screening and blending

  1. Screening
  2. Batch blending
  3. Finished powder

Use the applicable finishing path for the selected powder. The two paths are alternatives.

High-pressure water-atomized powder

High-pressure water-atomized powder: complete illustrated process, from feed materials to finished powder. The text equivalent follows.
Follow the arrows from feed materials to finished powder. Equipment symbols are schematic.
Read process steps

Feed materials

Alloy

Follow the numbered sequence.

  1. Melting
  2. High-pressure water atomization
  3. Wet magnetic separation
  4. Dewatering
  5. Drying
  6. Cooling
  7. Magnetic separation
  8. Screening
  9. Batch blending
  10. Finished powder

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 routes

Connect specifications to batch evidence.

Use the product specifications to compare grades and agree the acceptance requirements. The shipment COA provides actual batch results; process trials establish suitability for your pressing or MIM conditions.

Current supply confirmationTechnical data sheetParticle-size evidenceBatch certificate of analysis
R and D and testing equipment for powder qualification
R&D and testing equipment

Match the powder to the forming route.

Select a listed grade or send your target specification, and identify pressed PM or MIM. Include trial quantity, process conditions and any acceptance requirements.

Purchasing receives
Supply status, trial route and quotation inputs
Technical receives
Powder specification and process trial path
Response commitment
Initial technical response within 24 hours

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Product family: Stainless Steel / MIM Powder

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