SNC236 
 Implementation of standards 
 China Standard: GB/T3077-1999 Japanese standard: JIS G4053: 2003 American Standard: A29M: 2005 International Standard: ISO 683-18:1996 chemical composition Edit this paragraph 
 Mass fraction (%): C: 0.37 ~ 0.44 Si: 0.17 ~ 0.37 Mn: 0.50 ~ 0.80 Cr: 0.45 ~ 0.75 Ni: 1.00 ~ 1.40 
 Mechanical Properties 
 【Size】 25mm 【sample blank] quenching heat treatment temperature (℃): 820; Coolant: Oil-tempered heating temperature (℃): 500; coolant: water, oil and mechanical properties] [tensile strength (σb / MPa ): ≧ 980 Yield point (σs / MPa): ≧ 785 Elongation (δ5 /%): ≧ 10 section shrinkage (ψ /%): ≧ 45 impact absorbed energy (Aku2 / J): ≧ 55 Brinell Hardness (HBS100/3000) (annealing or tempering state): ≦ 241 
 Key Features 
 Carbon alloy quenched and tempered steel. High strength, high toughness and high hardenability. In the quenched state, good mechanical properties, good low temperature impact toughness. A tendency to temper brittleness, water easy to crack. Machinability is good, but poor weldability. Used in the quenched state. 
 Application examples 
 For the manufacture of forging and cold pressing and important section of a larger size of the quenched parts, such as connecting rod, disc, crankshafts, gears, shafts, screws, etc.