41Cr4 alloy structural steel delivery state and tensile yield strength

Introduction of 41Cr4 alloy structural steel:
41Cr4 (1.7035) is the most commonly used grade of alloy structural steel in the world. Its tensile strength, yield strength and hardenability are higher than those of No. 40 steel, but it also has certain defects that its weldability is limited and has a tendency to form cracks. 41Cr4 alloy structural steel is generally used for more important quenched and tempered parts such as parts that work under alternating loads, medium-speed and medium-load parts.

41Cr4 alloy structural steel executive standard: European standard EN 10083-1.

Delivery status of 41Cr4 alloy structural steel: delivery in heat treatment (normalizing, annealing or high temperature tempering) or no heat treatment.
PS: If the customer has other performance requirements for delivery status, it should be indicated in the contract.

Chemical composition of 41Cr4 alloy structural steel (element composition: wt%):
Carbon C: 0.38-0.45, Silicon Si: Allowable residual content≤0.40, Manganese Mn: 0.60-0.90, Sulfur S: Allowable residual content≤0.035, Phosphorus P: Allowable residual content≤0.035, Chromium Cr: 0.90-1.20, Nickel Ni: Allowable residual content≤0.030, Copper Cu: Allowable residual content≤0.030
PS: The specific chemical composition should be indicated in the MTC.

Mechanical properties of 41Cr4 alloy structural steel:
Tensile strength σb (MPa): ≥980(100)
Yield strength σs (MPa): ≥785(80)
Elongation δ5 (%): ≥9
Area shrinkage ψ (%): ≥45
Impact energy Akv (J): ≥47
Impact toughness value αkv (J/cm2): ≥59(6)
Hardness: ≤207HB
Sample size: sample blank size is 25mm
PS: The specific mechanical properties should be indicated in the MTC.

Application and use of 41Cr4 alloy structural steel:
41Cr4 alloy steel is used for more important quenched and tempered parts, such as parts working under alternating load, medium speed and medium load. After surface quenching, it can be used for parts with high load and wear resistance without great impact, such as gears, sleeves, shafts, crankshafts, pins.