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, but 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, important parts with high strength and good plasticity, as well as critical components requiring special performance 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: Allowable residue content ≤ 0.025

Chromium (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 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; Quenching Medium: Oil; Tempering Temperature: 600°C; Quenching Medium: Water, Oil)

(5) Heat Treatment Temperature for 40CRNIMO Steel Pipe:

Quench at 850°C, oil-cooled; temper at 600°C, water-cooled or oil-cooled

(6) Delivery Status of 40CrNiMo Steel Pipe:

Shipped in either heat-treated (normalizing, annealing, or high-temperature tempering) or non-heat-treated 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 customers over eleven years with its solid reputation, robust capabilities, superior products, competitive prices, and people-oriented services.

The company specializes in and sells seamless tubes with outer diameters of 10mm to 856mm and wall thicknesses of 1mm to 80mm. We can hot expand tubes to diameters of 219mm to 1020mm and wall thicknesses up to 6mm to 60mm, according to customer specifications.

Our products are applicable in various industrial sectors, 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 Pipe: GCR15 Steel Pipe, GCR15SiMn Steel Pipe

Mold Steel Pipes: 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

Welcome to contact us by letter or phone, old and new friends! We await your visit with personalized service, reasonable prices, complete specifications, and high-quality products!

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

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