SK7 spring steel Introduction:
Sk7 spring steel, sk7 spring steel, sk7 spring steel is a carbon tool steel, is Japan's Hitachi carbon tool steel grades, excellent performance, due to quenching and tempering after a higher hardness and wear resistance. Used as a tool for high hardness and abrasion resistance, such as simple molds and punches, cutting metal cutting tools, drilling tools, woodworking cutters, countersunk drill, ax, chisel, longitudinal hand saws , As well as fitter assembly tools, rivets and other secondary tools die. Now SK7 spring steel implementation of standards, chemical composition, mechanical properties, and related spring steel grades, the supply company described below:
Standard skirt spring steel Standard: JIS G4401-2009 Standard sk7 spring steel Chemical composition: Carbon C: 0.60-0.70 Silicon Si: 0.10-0.35 Mn Mn: 0.10-0.50 Sulfur S: ≤0.030 Phosphorus P: ≤0.030
Standard sk7 spring steel mechanical properties:
Hardness: annealing, ≤ 183HB, indentation diameter ≥ 4.40mm; quenching, ≥ 57HRC heat treatment specifications and microstructure:
Heat treatment specifications: sample quenching 780 ~ 820 ℃, water cooling. Spot Specifications:
Spring steel plate, with: 0.1-60mm spring steel bar: 2-460mm spring wire: 0.1-10.0mm
Soft material: HV190 following semi-hard: HV240-280 full hard: HRC45-60 standard metal spring steel:
S6C-CSP S65C-CSP S55C-CSP S55C-CSP S50C-CSP S5C-CSP S80C-CSP S5C-CSP S5C-CSP S5C-CSP S5C
Korea spring steel: SPS1 SPS3 SPS4 SPS5 SPS5A SPS6 SPS7 SPS8 SPS9 STB1 STB2 STB3 STB4 STB5 SH590P SH590S
Swedish spring steel: 1770 1774 1778 1912 1914 1922 1926 1940 1957 1973
British spring steel: 38Si7 45SiCrV6-2 46Si7 46SiCrMo6 50SiCrMo6 51CrV4 52CrMoV4 52SiCrNi5 54SiCr6 54SiCrV6 55Cr3 56Si7 56SiCr7 60Cr3 60CrMo3-1 60CrMo3-2 60CrMo3-3 60SiCrV7 61SiCr7 251A85 251A60 251H60 525A58 525A60 525H60 525A61 658A57 658A57 704A60 705A60 705H60 735A51 735H51 735A54 805H60 925A60 251A85 251A60 251H60 525A58 N525A60 535A99 805A20 832H13
German spring steel: C67S CK67 C75S CK75 C85S CK85 C100S CK101 C18S CK101 C18S CK1 C187S1Si7 38Si7 56Si7 51Si7 55Si7 1.1231 1.1274 1.1274 1.1222 1.5022 1.5024 1.5024 1.5024 1.5023 1.5028 1.5028 1.5029 15142 1.5225 1.7102 1.7106 1.7018 International Standard spring steel: 38Si7 46Si7 51CrV4 52CrMoV4 55Cr3 55SiCr6-3 55SiCrV6- 3 56SiCr7 60Cr3 60CrMo3-3 60Si8
US spring steel: ASTMA228 ASTMA227 ASTMA679 ASTMA229 ASTMA231 ASTMA232 ASTMA878 ASTMA401 AISI302 ASTMA313 AISI316 ASTMA313 AISI631 A-286 Inconel718
In the case of
InoconelX-750 AMS5698 AMS5699 AISI1050 ASTMA682 AISI1074
China spring steel: 65 70 75 80 85 65Mn 55Si2Mn 55Si2MnB 55SiMnVB 60Si2Mn 60Si2MnA 60Si2CrA 60Si2CrA 60Si2CrVA 60CrMnA 50CrMn 55CrMnA 50CrVA 60CrMnBA 60CrMnMoA 30W4Cr2VA 100CrMn6 100CM6 100CrMn7 100CrMoMo8 100CrMo7-2 100CD7 100CrMo7-3 100CrMo8-
