9CrSi cold-rolled plate (volume) alloy tool steel 0.3 * 50-350 * C Baosteel, Hangzhou Iron and Steel, Nanjing 9CrSi cold-rolled plate (volume) alloy tool steel 0.4 * 50-350 * C Baosteel, Hangzhou Iron and Steel, Nanjing 9CrSi cold rolled plate (volume) alloy tool steel 0.5 * 50-350 * C Baosteel, Hangzhou Iron and Steel, Nanjing 9CrSi cold-rolled plate (volume) alloy tool steel 0.6 * 50-350 * C Baosteel, Hangzhou Iron and Steel, cold rolled sheet Dragons 9CrSi (volume) alloy tool steel 0.8 * 50-350 * C Baosteel, Hangzhou Iron and Steel, Nanjing 9CrSi cold-rolled plate (volume) alloy tool steel 1.0 * 50-350 * C Baosteel, Hangzhou Iron and Steel, Nanjing 9CrSi cold-rolled plate (volume ) alloy tool steel 1.2 * 50-350 * C Baosteel, Hangzhou Iron and Steel, Nanjing 9CrSi cold-rolled plate (volume) alloy tool steel 1.5 * 50-350 * C Baosteel, Hangzhou Iron and Steel, Nanjing 9CrSi cold-rolled plate (volume) alloy tool steel 1.8 * 50-350 * C Baosteel, Hangzhou Iron and Steel, Nanjing 9CrSi cold-rolled plate (volume) alloy tool steel 2.0 * 50-350 * C Baosteel, Hangzhou Iron and Steel, Nanjing 9CrSi cold-rolled plate (volume) alloy tool steel 2.5 * 50-350 * C Baosteel, Hangzhou Iron and Steel, Nanjing 9CrSi cold-rolled plate (volume) alloy tool steel 3.0 * 50-350 * C Baosteel, Hangzhou Iron and Steel, Nanjing Steel Standard: GB / T 1299-1985 Features and Scope : measuring and cutting steel, is commonly used low-alloy tool steel, with high hardenability and hardenability, and higher tempering stability. Can be used in the manufacture of complex shape, deformation, high abrasion resistance, low-speed cutting tools, such as drills, thread tools, reamers, dies, taps, thread rolling board and rolling wheels. Chemical Composition: Carbon C: 0.85 ~ 0.95 Si Si: 1.20 ~ 1.60 Manganese Mn: 0.30 ~ 0.60 Sulfur S: ≤ 0.030 Phosphorus P: ≤ 0.030 Chromium Cr: 0.95 ~ 1.25 Ni: to allow the residual content of ≤ 0.25 Copper Cu: to allow the residual content of ≤ 0.30 Mechanical Properties: Hardness: annealing, 241 ~ 197HB, indentation diameter 3.9 ~ 4.3mm; 187 ~ 229HB (manufacturing thread tools); quenching, ≥ 62HRC Heat treatment Heat treatment specifications: Sample quenching 820 ~ 860 ℃, oil cooling . Delivery status: Delivery of steel in the annealed condition. Domestic: Q390 Q420 Q460 Q550 Q690 Sweden SSAB: DOXMEX700 DOXMEX900 DOXMEX960 DOXMEX700MC DOMEX960MC ThyssenKrupp of Germany: "S690QL" Xabo 890 high-strength steel in Finland: "S690QL" OPTIM960QC Japan JFE: "S690QL" "S690QL" "S690QL" European standard German Domestic: "S690QL" S960QL .............................................................................. sales hotline 18116155360 Li