S40C Lost Wax Investment Casting

Product Introduction

S40C is high-quality carbon structural steel

Corresponding brand

National standard grade 40 steel

Japanese brand number S40C

American Standard No. 1040

German brand number 1.1186

Characteristics and scope of application

S40C lost wax investment casting has high strength and good machinability, medium cold deformation plasticity, and poor weldability. It can be welded after quenching and tempering. There is no temper brittleness during heat treatment, but the hardenability is low. It is used as small-section quenched and tempered parts that bear large loads or large normalized parts with small stress, as well as surface, quenched parts that do not require high core strength and wear-resistant surfaces, such as crankshafts, spindles, drive shafts, connecting rods, etc. Tie rod, tooth.

S40C

Alloy

S40C is an alloy with high strength, good machinability, medium cold deformation ability, poor weldability, no temper brittleness, low hardenability, and prone to water quenching cracks.

Features and Applications

It is mostly used in the quenched and tempered or normalized state. The comprehensive properties of the two are similar. After surface quenching, it can be used to manufacture parts that can withstand greater stress. It is suitable for manufacturing crankshaft spindles, drive shafts, piston rods, connecting rods, sprockets, gears, etc. It needs to be preheated before welding and slowly cooled after welding.

Mechanical Properties

Tensile strength σb (MPa): ≥570

Yield strength σs (MPa): ≥335

Sectional shrinkage ψ/(%): ≥45

Impact absorption energy (Aku2/J): ≥47

The hardness of steel as delivered: HBS 10/3000: Unheated steel ≤217 Annealed steel ≤187

Recommended heat treatment/°C Normalizing 860 Quenching 840 Tempering 600

Sample size: Sample blank size/mm: 25

Detection Systems

Copper Silica Sol Investment Casting