material testing lab equipments , material testing lab equipments for civil department , torsion testing machine 100nm capacity, digital type with manual operation • capacity = minimum 100 nm • type = manual operation with digital reading • least count = maximum 0.01 n • clearance between grips = maximum 500mm • grips for square specimens : 5-15mm • operation : 440v, 50hz, three phase, ac supply • warranty minimum 3 years , brinell cum rockwell hardness testing machine • tester should allow testing of 230mm high & 155mm throat depth specimens • display - analog • rockwell scales - a, b, c • hardness resolution - 1.0 of a rockwell unit. • test loads of rockwell - 10 kgf pre load / 60, 100, 150 kgf main load • test loads of brinell - 10 kgf pre load / 187.5 kgf main load. • accuracy conforma to is 1586-2000 • warranty minimum 3 years • power supply – 1p, ac supply , 50hz (for brinell microscope only) specimen accommodations: • vertical space – minimum 230mm. • horizontal space (from central line) - minimum155mm , impact testing machine specifications charpytest izod test pendulum drop angle 120°± 10° 90° ± 5° pendulum effective weight 20± 2 kgs. 20± 2 kgs. pendulum impact energyminimum 30 kgm minimum 16.5 kgm least count 0.1 kgm 0.1 kgm distance of axis of hammer rotation and centre 825mm 825mm striking edge angle 30° ± 1° 75° ± 1° radius of curvature 2.25 mm 0.75 mm width 18mm horizontal: 10° vertical relief: 5° support distance 40mm gripping specimen with between arms dimension 10mm x 10mm sloping angle 0° nil relief angle 10° nilnil radius of curvature 1.25mm nil => limited