Y12Pb
Detailed introduction:
Y12Pb lead free cutting steel has good machinability, no directional performance, and high mechanical properties
● Purpose: Commonly used for manufacturing important mechanical parts, precision instrument parts, etc.
● Chemical composition
Y12Pb easy cutting structural steel_ Product chemical composition (mass fraction)/%
Carbon C (%): 0.08-0.16
Silicon SI (%): ≤ 0.15
Manganese MN (%): 0.70-1.10
Sulfur S (%): 0.15~0.25
Phosphorus P (%): 0.05-0.10
Lead 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 pull) 152-217HB
● Delivery status
Delivery status: delivered in hot-rolled or cold drawn condition, and the delivery status should be specified in the contract.
● Y12Pb reference corresponding steel grade:
China GB Y12Pb; Russia ГОСТ -; ASTM 12L13, UNS G12134; British BS -; French NF AD37Pb/10Pb2/10PbF2; German DIN 10SPb20; Japanese JIS SUM22L; International ISO 11SMnPb28
 
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
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