95Cr18, 9Cr18 Stainless Steel Equivalent, Composition, Properties

95Cr18 9Cr18 Stainless Steel Bar
9Cr18 Steel Bar

95Cr18 or 9Cr18 steel is a high-carbon high chromium martensitic stainless steel, which has improved corrosion resistance compared to Cr17 steel, and other properties are similar to those of Cr17.

95Cr18 is the new representation of 9Cr18, that is to say, 9Cr18 = 95Cr18.

9Cr18 stainless steel mainly used in the manufacture of corrosion resistant high strength wear resistant components such as shafts, pumps, valve parts, rods, springs, fasteners, etc. Due to the extremely easy formation of non-uniform carbides in the steel, which affects the quality and performance of the steel, attention should be paid to the production.

95Cr18, 9Cr18 Stainless Steel Chemical Composition

Chemical Composition %
Steel GradeCSi (≤)Mn (≤)P (≤)S (≤)CrNi (≤)
0.90 – 1.000.800.800.0400.03017.00 – 19.00(0.60)

Mechanical Properties of 9Cr18 Steel

  • Material HRC Hardness: ≥ 55 (Quenching and tempering);
  • Material HBW Hardness: ≤ 255 (Annealing)

Heat Treatment Specification of 95Cr18 Steel

  • Annealing: 800 – 920 ℃ (Slow cooling)
  • Quenching: 1000 – 1050 ℃ (Oil cooling)
  • Tempering: 200 – 300 ℃ (Oil or air cooling)

95Cr18 or 9Cr18 steel equivalent to US ASTM, Japanese JIS, European Germany DIN and France NF standard for reference.

GB/T 12209Cr18, 95Cr18AISI,
ASTM A276/A276M
440CDIN 17440,
DIN 17222
X105CrMo17JIS G4303SUS 440CNF A35-572,
NF A35-576-582,
NF A35-584


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