Steel Name: Y15Pb Free Cutting Structural Steel
● Execution standard: GB/T 8731-1988
● Characteristics and Applications
Y15Pb lead containing free cutting steel has good machinability, while Y15Pb has better machinability than Y12Pb. There is no directional performance, and it has high mechanical properties, commonly used in the manufacture of important mechanical parts, precision instrument parts, etc.
Chemical composition (%)
C :0.10～0.18
Si :0≤0.15
Mn :0.80～1.20
P :0.05～0.10
S :0.23～0.33
Pb :0.15～0.35
● 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
Hardness: (Hot rolled) ≤ 170HB; (Cold drawn steel) 152-217HB
● Delivery status
Delivery shall be made in hot-rolled or cold drawn condition, and the delivery status shall be specified in the contract
● Supply specifications
Round rod, hexagonal rod, forged square rod
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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Welcome new and old customers to call for consultation and negotiation.