What type of steel pipe is referred to as 40CrNiMo pipe:

40CrNiMo steel pipe features high strength, toughness, good hardenability, and resistance to overheating stability; however, it has high sensitivity to white spots and temper brittleness. Its weldability is poor, requiring preheating at high temperatures before welding and stress relief after welding. It should be used after tempering treatment.

What is the use of 40CrNiMo steel pipe?

Primarily used for high-strength components such as aircraft engine shafts, shafts, gears, fasteners, etc.

Generally, for critical components with high strength and good plasticity, and for important parts with special performance requirements after nitriding treatment, such as shafts, gears, fasteners, etc.

What are the chemical compositions of 40CRNiMo steel pipe?

Carbon C 0.37~0.44

Silicon Si 0.17~0.37

Manganese Mn 0.50～0.80

Sulfur (S) - Allowable residue content ≤ 0.025%

Phosphorus P: Allowable residual content ≤ 0.025

Chrome Cr 0.60～0.90

Nickel Ni 1.25～1.65

Copper Cu - Allowable Residual Content ≤0.25

Tungsten Mo 0.15～0.25

(4) What are the mechanical properties of 40CrNiMo steel pipe?

Tensile Strength σb (MPa): ≥980 (100)

Yield Strength σs (MPa): ≥835 (85)

Tensile elongation δ5 (%): ≥12

Section shrinkage rate ψ (%): ≥55

Impact Energy Aku (J): ≥78

Impact toughness value αkv (J/cm2): ≥98(10)

Sample Size: Sample blank size is 25mm

Heat Treatment: Quenching at 850°C; Cooling Medium: Oil; Tempering Temperature: 600°C; Cooling Medium: Water, Oil

(5) Heat treatment temperature for 40CrNiMo steel pipe:

Quenching at 850°C, oil-cooled; tempering at 600°C, water-cooled or oil-cooled

(6) Delivery Status of 40CRNIMO Steel Pipe:

Delivered in heat treated (normalizing, annealing, or high-temperature tempering) or non-heat treated condition. Steel supplied in annealing or high-temperature tempering condition with Brinell hardness GBW ≤ 269.

Sales Hotline:18265509689 (WeChat ID)Liaocheng Yiding Metal Material Co., Ltd. has earned the trust of numerous steel clients through eleven years of solid reputation, robust strength, superior products, competitive prices, and people-oriented services.

We specialize in and sell seamless steel tubes with outer diameters of 10mm to 856mm and wall thicknesses of 1mm to 80mm. We can also expand the diameter to 219mm to 1020mm and wall thicknesses up to 6mm to 60mm, according to customer specifications.

The product is applicable to various industrial fields, including engineering, coal mining, textiles, electricity, boilers, machinery, and more!

Our company also regularly sells materials:

Alloy Steel Pipes: 40CRNIMO pipe, 30CrMo, Q345B, Q345C, Q345D, Q345E, 20G, 40Cr, 20Gr, 16Mn-45Mn, 27SiMn, 12CrMo (T12), 12Cr1MoV, 10CrMo910, T91, 15CrMo, 35CrMo, 40CrMo, etc.

Carbon Steel Pipe: 10#, 15#, 25#, 30#, 35#, 50#, 55#, 60#

Bearings Steel Pipe: GCR15 Steel Pipe, GCR15SiMn Steel Pipe

Mold Steel Pipe: CR12MOV steel pipe, H13 steel pipe, CR12 steel pipe

High-strength Steel Pipe: Q420 Steel Pipe, Q390 Steel Pipe, Q460 Steel Pipe, Q550 Steel Pipe

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Liaocheng Yiding Metal Materials Co., Ltd. guarantees high-quality products, low prices, and comprehensive after-sales service to thank both new and existing customers.

      Sales Phone: 18265509689 (same as WeChat), Landline: 0635-7070151, Fax: 0635-7070152