sizes Carbon steel spring cutted sheets, belts, and pieces - MORE DETAILS Thicnkess: 0,05 - 4,00mm width: standard 300mm (100 - 500mm) lenght: standard 1000mm (100 - 5000mm) Rm: 1100-1300 | 1300-1500 | 1500-1700 N/mm2 FULL DIMENSIONAL LIST - CLICK HERE
Standards Steel Grades Chemical Composition % C: Mn: Si: P: S: Cr: Mo: Ni: Cu: PN 75 0.72 - 0.80 0.50 - 0.80 0.17 - 0.37 <0.040 <0.040 <0.30 - <0.30 <0.25 EN / DIN C75S - C 75 S - 1.1248 - 1248 0.70 - 0.80 0.60 - 0.90 0.15 - 0.35 <0.025 <0.025 <0.40 <0.10 <0.40 - AFNOR XC 75 - XC75 0.70 - 0.80 0.40 - 0.70 0.15 - 0.30 <0.035 <0.025 - - - - DIN C75 - C 75 - 1.0605 0.70 - 0.80 0.60 - 0.80 0.15 - 0.35 <0.045 <0.045 - - - - GOST 75 0.72 - 0.80 0.30 - 0.70 0.17 - 0.37 <0.035 <0.035 <0.15 - <0.15 <0.20 DIN Ck 75 - Ck75 0.70 - 0.80 0.60 - 0.80 0.15 - 0.35 <0.035 <0.035 - - - - DIN 75Cr1 - 75 Cr 1 - 1.2003 - 2003 0.70 - 0.80 0.60 - 0.80 0.25 - 0.50 <0.03 <0.03 0.30 - 0.40 - - - BS CS80 0.75 - 0.85 0.50 - 0.90 0.05 - 0.35 <0.045 <0.045 - - - - JIS S 75 CM - S75CM 0.70 - 0.80 0.60 - 0.90 0.15 - 0.35 <0.030 <0.035 <0.20 - <0.20 <0.30 STAS OLC 75A - OLC75A 0.70 - 0.80 0.50 - 0.80 0.17 - 0.37 <0.040 <0.040 <0.30 - <0.30 <0.25 ČSN / STN 12081 - 12 081 0.70 - 0.80 0.40 - 0.65 <0.35 <0.035 <0.035 - - - - ASTM AISI 1075 0.70 - 0.80 0.40 - 0.70 - <0.040 <0.050 - - - -
Steel C75S, 1.1248, 75Cr1, 1.2003 grade - specification and application
75 steel - C75S - Carbon spring steel with low hardening capacity for lightweight springs for oil hardening. It is characterized by resistance to abrasion and high strength. Used for low-loaded springs and springs, spring parts, clock springs, saws for cutting stones in the form of tapes and sheets.
As a constructional steel, it is used for medium-weight machine parts such as bolts and bucket links, rolls, molding boards, agricultural machinery parts, press plates and ball mills, press rods, and briquette presses. Non-weldable steel, resistant to temper embrittlement, prone to decarburization and oxidation during heat treatment.
Mechanical and physical properties C75S, 1.1248
Mechanical and physical properties Heat-treated state C75S +QT Tensile strength Rm 1200 - 1900 MPa Hardness HV HRC 370 - 580 HV 38.5 - 54.0 HRC Cold-rolled state C75S +CR Tensile strength Rm ≤ 1170 MPa Hardness HV ≤ 320 HV Soft state after smoothing rolling C75S +A+LC Tensile strength Rm ≤ 640 MPa Yield point Re ≤ 510 MPa Elongation A > 15% Hardness HV HRC < 200 HV < 93 HB General properties of C75S grade Tensile strength Rm ≥ 1080 MPa Yield point Re ≥ 880 MPa Hardness in the raw condition ≤ 285 HB Hardness in softened condition ≤ 241 HB Contraction Z ≥ 30% Elongation A ≥ 9% Density ρ ~7.85 kg/dm³ Linear Expansion Factor α20-100℃ ~11.4 ⋅ 10⁻⁶ K⁻¹ Heat capacity cp 20-100℃ ~483 J ⋅ kg⁻¹ K⁻¹ Heat conductivity λ20℃ 49.81 W ⋅ m⁻¹ K⁻¹
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