15CrMoR – SA387Gr12CL2 Hot Cold Rolled Alloy High Strength Carbon Steel Plate

Chemical Composition(Wt.%)

C Si Mn P S Cr Mo
0.12~0.18 0.15~0.40 0.40~0.70 ≤0.025 ≤0.010 0.80~1.20 0.3~0.60

Note: The temper embrittlement sensitivity coefficient meets the following requirements:

X= (10P+5Sb+4Sn+As)=10=15, where the elements are substituted with cppm content, such as 0.01% with 100 ppm.

J=(Si+Mn)×(P+Sn)×10≤180, where the elements are substituted by weight percentage, for example, 0.01% is substituted with 0.01.

Product Introduction

15CrMo alloy steel plate is a heat-resistant steel with pearlite structure, which has high thermal strength (δb≥440MPa) and oxidation resistance at high temperatures, and has a certain resistance to hydrogen corrosion. Due to the high content of Cr, C and other alloying elements in the steel, the hardening tendency of the steel is obvious and the weldability is poor. Its chemical composition and mechanical properties are regulated by the Chinese national standard GB/T 3077-2006.

15CrMo alloy steel is equivalent to SA387Gr12CL2 in the United States, and 13CrMo4-5 in Europe standard. 15CrMo alloy steel carbon content generally does not exceed 0.18%.

15CrMo alloy steel has the following general characteristics:

1)Low carbon Content: 15CrMo alloy steel belongs to the category of alloy structural steel, cold extruded, carburized and hardened steel. The carbon content in 15CrMo alloy is generally less than 0.20%, making it a low carbon alloy steel suitable for forming processes.

2)Excellent Plasticity: 15CrMo alloy steel exhibits good plasticity, allowing it to be formed into various shapes and structures without fracturing.

3)Good comprehensive properties: In mechanical engineering, many machine parts not only require the core to have sufficient toughness, plasticity and bending strength, but also require the surface to have high hardness, high wear resistance and high fatigue strength within a certain thickness.

4)Wide Application: 15CrMo alloy steel is widely used in general structural and engineering purposes, including machinery manufacturing, pressure vessels, transportation equipment, and other industries where strength and durability are required.

Product name  Alloy Carbon Steel Plate
Grade 15CrMoR
Thickness 6-100mm
Width 1-3500mm
Length 6000-12000mm
Delivery time 7-20 days
Payment terms T/T, L/C
Packaging details Standard export seaworthy packing or as required

Mechanical Properties

 Steel Statues Thickness
Tesile Strength (Mpa) Yield Strength
Cold bending
and tempering
6~60 450-590 ≥295 ≥19 20 ≥31 d=3a
>60~100 ≥275
>100-150 440-580 ≥255


15CrMo alloy steel has a wide range of applications in various industries due to its good comprehensive properties and affordability. Some common applications of 15CrMo alloy steel include:

1)Machinery Manufacturing: 15CrMo alloy steel is employed in the manufacturing of machinery and equipment components, such as frames, chassis, , rankshafts, gears, camshafts of internal combustion engines and gears in important reducers and structural parts. Its versatility and easy machinability make it a preferred choice for various machinery applications.

2)Automotive Industry: 15CrMo alloy steel is utilized in the automotive industry for the production of components like car frames, chassis and gears in important reducers and structural parts. Its high strength and good formability make it suitable for automotive applications.

3)Railway Vehicles: 15CrMo alloy steel is also used in the manufacturing of railway vehicles, including railcar bodies, underframes, and structural components. Its mechanical properties and durability meet the requirements of the railway industry.

4)Storage Tanks: 15CrMo alloy steelis sometimes employed in the construction of storage tanks for storing liquids or gases. Its weldability and strength make it suitable for this application.

5)General Fabrication: 15CrMo alloy steel is widely utilized in general fabrication processes where low carbon alloy steel with good mechanical properties is required. It can be formed, welded, and machined to create various structures and components.

6)Common applications: petroleum, petrochemical, high-pressure boilers, etc. Special-purpose seamless pipes include seamless pipes for boilers, seamless steel pipes for geology, and seamless pipes for petroleum, etc.

Classification By Size:

The length is generally 2440mm, 2000mm, 3050mm, 4000mm, 3000mm, and the thickness is distinguished by cold rolling and hot rolling. Cold rolling mainly has thickness 1.0mm, 1.2mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm. The main thickness of hot rolling is 3.0mm, 4.0mm, 6.0mm, 8.0mm, 10.0mm, and the width is generally 1000mm, 1219mm, 1500mm.Please contact customer service for general specifications.

Hot-rolled products have excellent properties such as high strength, good toughness, easy processing and good weldability, so they are widely used in manufacturing industries such as steel, construction, machinery, boilers, and pressure vessels. Application range: (1) After annealing, it is processed into ordinary cold rolling; (2) The galvanizing unit with pre-annealing treatment device processes galvanizing; (3) Panels that basically do not need to be processed.

Hot-rolled coils (in the form of flat plates or coils) generally have a thickness of 2.0-13.5mm, of which the price of 2.0-3.0mm hot coils gradually decreases from thin to thick; most steel mills have a basic price of 3.1mm-13.5mm Equivalent, the price of 3.1-4.0mm and 9.5mm-13.5mm hot plate coils in some manufacturers and markets may be higher than the price of 4.0mm-9.5mm plates. Hot plate coils represent products with a thickness of 5.5mm. Under normal circumstances, the price of flat plates is slightly higher than the price of coils.

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