|Class 1||Class 2||Class 3|
|Elastic modulus (Gpa)||270≤E≤330|
|Coefficient of thermal expansion, X10-6/ºC||2.0≤α≤3.7|
|(applicable range: room temp. to 500ºC)|
|Average flexural strength (MPa)||4-point test method||≥750||≥650||≥530|
|3-point test method||≥820||≥720||≥550|
|Average Vickers hardness /Gpa||≥14.2||≥13.3||≥12.7|
|Average indentation fracture resistance(Mpa*m1/2)||≥6||≥5||≥5|
|Crushing load ratio (%)||40||35||30|
|Capacity||*Fine ceramics standard: GB/T 31703-2015,ISO 26602-2017,ASTM F2094 F2094M-2018a,|
WHY CHOOSE US?
We sincerely look forward to hearing from you ! ^-^
1. Founded in 1989, Shandong Dihui Machinery Technology Co., Ltd. is a large-scale rolling element manufacturer.
2. Advanced production and testing equipment. Including 98pcs cold forging machines, 46pcs vertical 4980 ball mills, 42pcs 4980 ball grinding machines, 56pcs 4780 lapping machines, 4pcs heat treatment equipment, 68pcs punching machines, etc.
3. Mainly produces stainless steel balls, high/medium/low carbon steel balls, bearing steel balls, ceramic balls, glass balls, roller, needles and etc., with over 55 billion annual output balls of various specifications.
4. ISO 3290-1-2014, GB/T308.1-2013, DIN 5401-2002 standard, We provide balls, rollers, needles, etc. of various specifications and materials, precision G5-G1000 and specifications of 0.5mm-120.0mm.
5. Widely used in the aerospace industry, automotive industry, precision instruments, meters, toys, motorcycles, bicycles, bearings, luggage, universal wheels, slide rails, medical equipment, and food machinery, and puncture decorations and etc.
1.Q: Do you like to accept small orders?
A: Sure. We enjoy growing up together with all our clients, whatever big or small. You will become bigger and bigger to be with us.
2.Q: Will you send me a free sample?
A: Yeah, you can get a free sample just by paying the delivery fee.
3.Q: Could you accept OEM and customization?
A: YES, we can customize for you according to sample or drawing.
4.Q: Is it your own factory or are you a trading company?
A: We have our own factory and you are welcomed to come and visit.
5.Q: What certifications do you have?
A: We have ISO 3290-1-2014, SGS, IATF16949 certifications.
6.Q: Could you tell me the payment terms?
A:We accept the TT, L/C, West Union, MoneyGram, and other ways. We always do our best to serve our esteemed clients.
7.Q: Could you tell me the delivery time of your goods?
A: 3-7 days for stock goods, other goods according to the quantity for about 3-21 days.