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The austenitic stainless steels generally provide better corrosion resistance compared to ferritic stainless steels, at significantly higher cost due to the large nickel addition.
The following tables contain a list of the materials available. For more complete coverage of properties, reference MPIF Standard 35, ASTM B783, ISO 5755, DIN 30910-4, and JIS Z2550, and download the technical information bulletins of interest. Standard powder metal materials are defined in North America by MPIF Standard 35 and ASTM B783, essentially equivalent standards. German PM steels are listed in DIN 30910-4, or more recently, ISO 5755. Japan steels are listed in JIS Z2550, with grade names changing with the revision from 1989 to 2000.
TYPE
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GRADES
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DESCRIPTION
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303L
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APMI/MPIF SS-303L,
JIS P3506
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304L type with manganese for improved machinability at the expense of some corrosion resistance.
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303N
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APMI/MPIF SS-303N1, SS-303N2,
ISO FL303-N,
JIS P3504, P3505
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Sintered in an atmosphere containing nitrogen for higher strength and hardness at the expense of some corrosion resistance.
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304L
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SSI-304L-HTS,
APMI/MPIF SS-304H, SS-304L,
JIS P3516
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Low carbon and nitrogen for best corrosion resistance.
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304LCb
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SSI-304LCb-HTS
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304L with a small columbium (niobium) addition to prevent weld sensitization.
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304N
|
APMI/MPIF SS-304N1, SS-304N2,
ISO FL304-N,
JIS P3514, P3515
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304 sintered in an atmosphere containing nitrogen for higher strength and hardness at the expense of some corrosion resistance.
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316L
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SSI-316L-HTS,
APMI/MPIF SS-316H, SS-316L,
ISO-FL316,
JIS P3526
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304L type with molybdenum added for improved corrosion resistance. Low carbon and nitrogen for best corrosion resistance.
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316LCb
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SSI-316LCb-HTS
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316L with a small columbium (niobium) addition to prevent weld sensitization.
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316N
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APMI/MPIF SS-316N1, SS-316N2,
ISO FL316-N,
DIN Sint-C40, Sint-D40,
JIS SMS 1025, SMS 1035, P3524, P3525
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316 sintered in an atmosphere containing nitrogen for higher strength and hardness at the expense of some corrosion resistance.
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