Steel Name: Y15 Free Cutting Structural Steel
● Execution standard: GB/T 8731-1988
● Chemical composition
C :0.10-0.18
P:0.05-0.10
S :0.23-0.33
Mn :0.80-1.20
Si :≤0.15
● Mechanical properties
Tensile strength σ b (MPa): (hot-rolled) 390-540;
(Cold drawn) When the thickness or diameter of steel is 8-20: 530-755;> 20-30 hours: 510-735 hours;> 30 o'clock: 490-685,
Elongation rate δ 5 (%): (hot rolling) ≥ 22; (Cold rolling) ≥ 7.0
Shrinkage rate of cross-section (%): (hot rolling) ≥ 36
● Characteristics and Applications
Easy cutting structural steel - Y15 Y15 is a type of easy cutting structural steel with good precision and ease of cutting, greatly improving the service life of cutting tools and reducing processing time. It is S-P composite high sulfur, low silicon easy cutting steel. The cutting performance is significantly higher than that of Y12 steel, and the production efficiency is increased by 30-50% compared to Y12 steel. Especially during tapping, the tap life is more than twice that of Y12, and the tapping effect is twice that of imported Pb-S composite low-carbon easy cutting steel 12L14 or 9SMn23Pb. Manufacturing unimportant standard components such as bolts, nuts, pipe joints, spring seats, etc
Y15 is a free cutting structural steel. By increasing the content of sulfur and manganese in the steel, a large amount of sulfurized manganese inclusions are formed. During cutting, iron chips are easily broken, which can improve the surface quality of the parts and enable faster cutting speed and deeper feed rate processing, thereby improving production efficiency and saving production costs. Low carbon easy cutting steel is mainly used to manufacture parts with low strength requirements but high roughness requirements, such as screws, screws, nuts, pipe joints, connecting bolts, etc. Medium carbon easy cutting steel Y35 can be used for parts with high strength requirements and difficult to machine, such as parts on textile machines and computers. Low carbon easy cutting steel is generally used in hot rolling or cold drawing state, and can also be surface carburized; Medium carbon easy cutting steel is generally used after heat treatment.
The main uses of free cutting steel are:
Free cutting steel is mainly used for the production of instruments, watch parts, automobiles, machine tools, and other various machines that require strict size and smoothness under low stress. It has strict requirements for dimensional accuracy and smoothness
Standard components with relatively low mechanical performance requirements, such as gears, shafts, bolts, valves, bushings, pins, pipe joints, spring seat cushions, machine tool screws, plastic molding molds, surgical and dental procedures, etc. Specifically, as follows
1. Automatic lathe processing, metal stamping parts processing;
2. Electronic industry, fiber optic connectors, CD players, scanners, medical equipment;
3. Household appliances and instrumentation industry;
4. Office equipment (computers, photocopiers, cameras, fax machines, etc.);
5. Clock components and glasses;
6. Electronic terminal pins, timers, carburetors;
7. Decorations, lighting accessories, cars, motorcycles, chains;
8. Clean the car, sweeping tools, and toys;
9. Pen accessories, handbag accessories, belt buckles, fishing gear, etc;
10. Double headed bolts, screws, nuts, pipe joints, spring seats, etc.
5、 Characteristics of free cutting steel:
1. Good processing performance: The product has the characteristics of smooth cutting, excellent material quality, stable processing, good metallographic structure, stable chemical composition, small deviation, clean steel purity, low impurity content, and is not easy to damage the cutting tool; Extremely easy to cut on a lathe, with a 40% increase in tool life and production efficiency;
2. Good electroplating performance: cutting processing is very easy; Can drill deep holes, mill deep grooves, etc; The processing efficiency can be significantly improved compared to ordinary steel; The electroplating performance of the product is good, which can replace copper products and greatly reduce product costs;
3. Good smoothness: The surface smoothness of the workpiece after machining is good;
4. Environmental friendliness: Complies with the EU SGS environmental certification standards and has passed the Swiss environmental certification. The products can be exported as mechanical equipment: woodworking machinery, ceramic machinery, papermaking machinery, glass machinery, food machinery, construction machinery, plastic machinery, textile machinery, jacks, hydraulic presses, etc;
Electrical product components: motor shaft, fan shaft, sewing machine shaft, etc;
Furniture: especially exported metal furniture such as coffee tables, chairs, outdoor furniture;
Metal utensils: garden tools, barbecue grill grilles, screwdrivers, anti-theft locks, etc;
Small hardware accessories: such as guide rails, machine keys, nuts, screws, round nails, hexagonal nails, octagonal nails, and various standard parts of different specifications;
Automotive and motorcycle spare parts, etc.
Complete supply specifications: diameter 1.0-200Mm hexagonal square bar
We provide customized high-precision Yiche light flat iron, square iron, coil wire, Yiche hexagonal steel, environmentally friendly hexagonal steel, 45 # hexagonal steel, S35C SCM435 hexagonal bar with a diameter of 50mm or more, Yiche iron with a diameter of 30mm or more, environmentally friendly Yiche iron. We have a large inventory of standard specifications, available in stock, and material certification. SGS report
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