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Chemical component and
dynamic performance of common material		 Approximate antitheses
with other country‘s steel grade		 Physical and chemical performance
and specification of common double-phase
stainless steel
Physical and chemical performance and specification of common double-phase stainless steel
 1.Chemical component（%）
Steel grade C≤ Mn≤ Si≤ S≤ P≤ Cr Ni Mo Cu≤ N
S32750(SAF2507)

00Cr25Ni7Mo4N 		0.03 1.20 0.80 0.020 0.035 24.0/26.0 6.0/8.0 3.0/5.0 0.50 0.24/0.32
S31803(SAF2205)

00Cr22Ni5Mo3N 		0.03 2.00 1.0 0.02 0.030 21.0/23.0 4.5/6.50 2.50/3.50   0.08/0.20
S31500(3RE60)

00Cr18Ni5Mo3Si2		 0.03 1.2/2.00 1.4/2.00 0.030 0.030 18.0/19.0 4.25/5.25 2.50/3.00   0.05/0.10
 2.Mechanical performance
Item Heat treatment system ℃ σb(Mpa)≥ σs(Mpa)≥ σ%≥ Rigidity≤
Steel grade B C
S32750(SAF2507)

00Cr25NiMo4N 		1025-1125

Water hardening		 800 550 15 310 32
S31803(SAF2205)

00Cr22Ni5Mo3N 		1020-1100

Water hardening		 620 450 25 290 30.5
S31500(3RE60)

00Cr18Ni5Mo3Si2		 980-1040

Water hardening		 630 440 30 290 30.5
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