45 Can steel replace 45Mn

It depends on the conditions you are in, if there are no requirements for strength, hardness and other conditions, it doesn't matter. But if you want to have high strength, hardness, and modulus, you can't. Because No. 45 is just ordinary carbon steel, after adding MN, its strength and hardness have increased significantly.

It is suitable for machinery with high strength requirements.

Can steel replace 45mn.

No. 45 steel belongs to high-quality carbon structural steel, commonly known as excellent steel, belongs to medium-carbon carbon structural steel, this No. 45 steel will not deliberately add alloying elements to the steel, and it is also a high-quality structural steel that is widely used. The use of No. 45 steel depends on its properties, No. 45 steel has a certain toughness and plasticity, and has high strength, good machinability, and the use of quenching and tempering treatment can obtain good comprehensive mechanical properties. No. 45 steel is suitable for the manufacture of high-strength moving parts, such as air compressors, pump pistons, steam turbine impellers, rolled shafts, connecting rods, worms, racks, gears, pins, etc. in heavy and general machinery.

No. 45 steel is usually used in the quenched and tempered or normalized state, which can replace carburized steel and is used to manufacture wear-resistant parts on the surface, at this time, it must be quenched by high-frequency induction or flame quenching, such as crankshafts, gears, machine tool spindles, piston pins, transmission shafts, etc., and is also used to manufacture medium-load shafts, threshing drums, concave nail teeth, sprockets, gears and fitter tools for agricultural machinery.

45mn belongs to the medium carbon quenched and tempered steel, strength, toughness and hardenability are higher than 45 steel, quenched and tempered treatment can obtain better comprehensive mechanical properties, good machinability, but poor weldability, generally used for parts under large load and wear resistance working conditions, such as crankshafts, spline shafts, shafts, connecting rods, universal joint shafts, automobile half shafts, gears, clutch discs, bolts, nuts, etc.

No. 45 steel is usually used in the quenched and tempered or normalized state, which can replace carburized steel and is used to manufacture wear-resistant parts on the surface, at this time, it must be quenched by high-frequency induction or flame quenching, such as crankshafts, gears, machine tool spindles, piston pins, transmission shafts, etc., and is also used to manufacture medium-load shafts, threshing drums, concave nail teeth, sprockets, gears and fitter tools for agricultural machinery.

Can steel replace 45mn, if there are no requirements for strength, hardness and other conditions, it doesn't matter. But if you want to have high strength, hardness, and modulus, you can't. Because 45 steel is just ordinary carbon steel, after adding MN, its strength and hardness have increased significantly.

It is suitable for machinery with high strength requirements.

45 is a grade of steel is a high-quality carbon structural steel, corresponding to the Japanese standard S45C, the American standard: 1045, and the German standard C45. It is characterized by higher strength and resistance to deformation than ordinary A3 steel.

Its chemical composition, element ratio (%), carbon; Chromium cr: ; Manganese mn:; Nickel Ni: ; Phosphorus: ; Sulfur s: ; Silicon SI:

No. 45 steel is widely used in machinery, when not heat-treated: HB 229;Heat Treatment: Normalizing; Impact power:

aku≥39j；；High strength, plasticity and toughness are good, 45 steel plate quenching without tempering, hardness greater than HRC55 (up to HRC62) is qualified, after heat treatment, quenching can reach HRC42-46, so that it can not only ensure its good mechanical properties, but also to obtain the hardness requirements of the surface, used to make small cross-section quenched and tempered parts with large loads and large normalizing parts with less stress, as well as surface quenching parts with low requirements for core strength, such as pins, guide pillars, watch needles and other components.

Just inside the elasticity is good, and the hardness is good.

The steel is a high-quality carbon structural steel.

Steel is the name in GB, called S45C in JIS, 1045, 080M46 in ASTM, and C45 in DIN.

The carbon content in its chemical composition is, that is, the carbon content is up and down, and the steel number is named after the amount of carbon in the GB standard, so the steel with the carbon content is named 45 steel.

Because it is to adjust the carbon content (c) to improve the mechanical properties of steel, therefore, according to the level of carbon content, this kind of steel can be divided into three categories, low travel carbon steel - carbon content is generally less than, such as steel, etc.; Medium carbon steel - the carbon content is generally between, such as steel, etc.; High-carbon steel - the carbon content is generally greater than.

This type of steel contains no alloying elements (except for residual elements) except for carbon (C) elements and a certain amount of silicon (Si) for deoxidation (generally not exceeding manganese (Mn) (generally not exceeding alloying elements). This type of steel must have both a chemical composition and mechanical properties. The content of sulfur (S) and phosphorus (P) impurity elements in steel is generally controlled as follows, which are respectively called high-quality steel, high-grade high-quality steel, and super-high-quality steel.

Jianghu Baixiao will answer for you: 37mn5 cannot replace No. 45 steel. Because there is a core difference between the two, the difference between 37mn5 and 45 steel:

1. Different uses 37Mn5 steel pipe is J55 steel pipe, which is often used in oil well drilling and is also used as a raw material for rolling anchors. No. 45 steel is a high-quality carbon structural steel, which is the most commonly used medium carbon quenched and tempered steel, with good hectochemical properties, low hardenability, and easy cracks when water quenching. Small parts should be quenched and tempered, and large parts should be normalized.

It is mainly used to manufacture high-strength moving parts, such as turbine impellers and compressor pistons. shafts, gears, racks, worms, etc. Pay attention to the preheating of weldments before welding, and relieve stress annealing after welding.

2. The chemical composition of the MN5 chemical composition test (1) is in accordance with the provisions of SY T6194-96. The casing and its couplings are of the same steel grade. The sulfur content is < and the phosphorus content is <.

2) Take chemical analysis samples according to the provisions of GB222-84. Chemical analysis is carried out according to the provisions of the relevant parts of GB223. (3) American Petroleum Institute arispec5ct1988 branch back 1st edition regulations.

Chemical analysis according to the latest version of ASTME59 sample preparation, according to the latest version of ASTME 350 for chemical analysis No. Gang chemical composition test The main component is Fe (iron element), and contains the following small elements: C:::

Density, modulus of elasticity 210gpa, Poisson's ratio.

Steel refers to 45 steel; 45 steel is the name in GB, also called "oil steel". The market is mostly spot hot-rolled; mm). The cold plasticity of the steel is general, annealing and normalizing are slightly better than those when quenched and tempered, and it has higher strength and better machinability.

Normalizing can improve the cutting performance of blanks with a hardness of less than 160HBS. After quenching and tempering, the comprehensive mechanical properties of the steel should be optimized compared with other medium-carbon structural steels, but the hardenability of the steel is low, the critical quenching diameter in water is 12 17mm, and there is a tendency to crack when water quenching.

When the diameter is greater than 80mm, after quenching or normalizing, its mechanical properties are similar, and higher strength and toughness can be obtained after quenching and tempering of small and medium-sized mold parts, while large parts are suitable for normalizing treatment, so this steel is usually used in the quenched and tempered or normalized state.

Dear, I am glad to answer for you: What is the performance of 45 and 45mn steelAnswer: Dear, there is a difference between 45mn and 45 steel.

The former is a new steel grade, according to the National Standard of the People's Republic of China GB T-2008 "Iron and Steel Product Grade Qi Oak Representation Method" blind skin regulations, there is a high metal element manganese high-quality structural steel. It has high strength, hardness and durability, and the grinding difference also has good toughness, its hardenability is high, and the heat treatment process performance is also good. 45 steel is a high-quality carbon steel, which is often used in the production of various machine parts and accessories, such as bolts, gears, shafts, etc.

It has the characteristics of high strength and high hardness.