![]() ![]() Besides, we can customize the test grips. Except for ASTM D412, UI-1100 can still perform many tests like tear, shear and etc. Before delivery, we will pre-set the ASTM D412 test program so that users can save time on the program setting. With specially designed software, users can easily observe the dynamic test data of the test procedure. Unuo Instruments’ UTM adopts servo motor to ensure the constant speed of test and high precision load cell to measure the force. Unuo Instruments UI-1100 Universal Testing Machine Features Use ring shape die with drill press to cut the sample.Ģ) Adopt speed 500±50mm/min, run the test and record the ultimate(breaking) elongation and the tensile(force) strength. Set after break: after the sample is broken, test it for 10 min, fit the 2 pieces together and make them in good contact over the full area of the break. Then, hold the specimen at the specified elongation for 10 min, release quickly without allowing it to snap back and allow the specimen to rest 10min. Tensile set: place the sample as regulated set the grip at a constant speed for 15s for reach the specified elongation. Although the extensometer is an optional accessory for UTM, but we do suggest customer to purchase it with UTM especially for customer who will need to test rubber. To test the elongation, extensometer is a must-needed device for UTM. Record the force aT the elongation specified for the test and break. Tensile stress, tensile strength and yield point: Set the speed to 500±50mm/min. Please be careful to place specimen as per regulated. Straight: only applied when eight dumbbell or ring shape samples is not practical to cutĢ)Fix the dumbbell or straight sample on the UTM. Unuo Instruments can supply the cutting die and cutting machine. Method A is the most widely used method of ASTM D412.ĭumbbell: Use die C shape cutting die to cut sample. ASTM D412 method A for dumbbell and straight shape samples Requirement for tensile strength tester(UTM) of ASTM D412Ĭheck recommended tensile strength tester 4. And its test samples should not be prestressed. ![]() Both test methods need a universal testing machine to perform the test. Method A for dumbbell and straight shape sample Method B for ring shape sample. ASTM D412 contains 2 kinds of test methods. It tends to measure rubber/elastomers tensile stress, tensile stress at a given elongation, tensile strength, yield point, and ultimate elongation. ASTM D412 Tensile strength test standard for rubber and elastomersĪSTM D412 tests samples in the shape of dumbbells, rings, or straight pieces of uniform cross-sectional area. It is a very useful test to know material properties. Tensile strength test is used to measure a material’s tensile strength resistance ability. Tensile strength is the max tensile stress or force that the tested sample can withstand before breaking. This test standard includes 2 kinds of test methods for different shapes of samples and needs universal testing machine to perform the test. Soft rubber, high elastic materials, plastic ductile materialsĭIN ISO 48, ASTM D 1415, NFT 46-003, BS903 Part.ASTM D412 is used to measure the tensile(tension) properties of rubber and elastomers. Thin walled O-rings, moulded parts, standard platesĭIN ISO 48, ASTM D 1415, NFT 46-003, BS903 Part. Sponge- and foam rubber, cellular rubber, silicone Soft elastic materials, pressure rolls, middle firm, textile fabrics, nylon, orlon, perlon, rayon Plastics and middle hard rubber materials Middle hard materials from rubber, typewriter roles, flat materials Hard rubber, hard DIN EN ISO 868 4 plastics, acrylic glass, polystyrene, rigid thermoplastics, Resopal, pressure rollers, Vinyl plates, cellulose-Acetate, etc.ĭIN ISO 7619, ASTM D 2240, NFT 51-174, BS903 Part. Soft rubber, elastomers, DIN EN ISO 868 4 natural rubber products, neoprene, casting resin, polyester, soft PVC, leather, pressure rollers, etc.ĭIN ISO 7619, DIN 53505, ASTM D 2240, NFT 51-174, BS903 Part. ![]()
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