Duplex stainless steel commonly used indicators of physical and chemical properties

1、Chemical Composition（%）

Steel Specification C≤ Mn≤ Si≤ S≤ P≤ Cr Ni Mo Cu≤ N
S32750(SAF2507) 00Cr25Ni7Mo4N 0.03 1.2 0.8 0.02 0.035 24.0/26.0 6.0/8.0 3.0/5.0 0.5 0.24/0.32
S31803(SAF2205) 00Cr22Ni5Mo3N 0.03 2 1 0.02 0.03 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 0.03 0.03 18.0/19.0 4.25/5.25 2.50/3.00   0.05/0.10

 

2、Mechanical Properties

Items Heat Treatment System  ℃ σb(Mpa)≥ σb(Mpa)≥ σ%≥ Hardness ≤
Steel Specification Brucellosis Rockwell
S32750(SAF2507) 00Cr25NiMo4N 1025-1125  Water quenched 800 550 15 310 32
S31803(SAF2205) 00Cr22Ni5Mo3N 1020-1100 Water quenched 620 450 25 290 30.5
S31500(3RE60)  00Cr18Ni5Mo3Si2 980-1040 Water quenched 630 440 30 290 30.5

1、Chemical Composition（%）

Steel Specification C≤ Mn≤ Si≤ S≤ P≤ Cr Ni Mo Cu≤ N
S32750(SAF2507) 00Cr25Ni7Mo4N 0.03 1.2 0.8 0.02 0.035 24.0/26.0 6.0/8.0 3.0/5.0 0.5 0.24/0.32
S31803(SAF2205) 00Cr22Ni5Mo3N 0.03 2 1 0.02 0.03 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 0.03 0.03 18.0/19.0 4.25/5.25 2.50/3.00   0.05/0.10

 

2、Mechanical Properties

Items Heat Treatment System  ℃ σb(Mpa)≥ σb(Mpa)≥ σ%≥ Hardness ≤
Steel Specification Brucellosis Rockwell
S32750(SAF2507) 00Cr25NiMo4N 1025-1125  Water quenched 800 550 15 310 32
S31803(SAF2205) 00Cr22Ni5Mo3N 1020-1100 Water quenched 620 450 25 290 30.5
S31500(3RE60)  00Cr18Ni5Mo3Si2 980-1040 Water quenched 630 440 30 290 30.5