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

40CrNiMo steel pipes feature high strength and toughness, excellent hardenability and stability against overheating, but are highly sensitive to white spots and exhibit temper brittleness. They have poor weldability, requiring preheating at high temperatures before welding and stress relief after welding. They should be used after being tempered.

What is the 40CRNiMo steel pipe used for?

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

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

(3) What are the chemical compositions of 40CrNiMo steel pipes?

Carbon C 0.37~0.44

Silicon Si 0.17~0.37

Manganese (Mn) 0.50～0.80

Sulfur (S) - Allowable Residual Content ≤0.025%

Phosphorus (P) residual content ≤ 0.025%

Chrome Cr 0.60~0.90

Nickel Ni 1.25～1.65

Copper Cu - Allowable Residual Content ≤ 0.25

Molybdenum 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)

δ5 elongation (%): ≥12

Section reduction ratio 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 degrees; Quenching Medium: Oil; Tempering Temperature: 600 degrees; Cooling Medium: Water, Oil

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

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

(6) Delivery Condition of 40CRNiMo Steel Pipe:

Shipped in heat treated (normalizing, annealing, or high-temperature tempering) or unheated condition. Steel supplied in the annealing or high-temperature tempering condition has a Brinell hardness of GBW ≤ 269.

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

We specialize in and sell seamless pipes with outer diameters of 10mm to 856mm and wall thicknesses of 1mm to 80mm. We can hot expand to diameters of 219mm to 1020mm and wall thicknesses up to 6mm to 60mm, as per customer requirements.

Our products are applied in various industrial fields, including engineering, coal mining, textile, 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 Pipes: 10#, 15#, 25#, 30#, 35#, 50#, 55#, 60#

Bearings Steel Tube: GCR15 Steel Tube, GCR15SIMN Steel Tube

Mold Steel Pipes: Cr12mov Pipe, H13 Pipe, Cr12 Pipe

High-Strength Steel Pipes: Q420 Pipe, Q390 Pipe, Q460 Pipe, Q550 Pipe

Welcome new and old friends to contact us via letter or phone for inquiries. We look forward to your visit with personalized service, reasonable prices, a complete range of specifications, and high-quality products!

Liaocheng Yiding Metal Materials Co., Ltd. guarantees excellent quality, competitive prices, and comprehensive after-sales service to thank both new and old customers.

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