| Customization: | Available |
|---|---|
| Color: | Black |
| Diameter: | 5 mm |
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| Item | Test Result | Test Basis |
| D50 | 0.7um-0.9um | light transmittance sedimentation method |
| secific surface area | 13.71 m2/g | ST-A08 specific surface area meter |
| fsi | 0.28% | XRD |
| α - Si3N4 | 94.25% | XRD |
| N | 39.57% | inert gas pulse infrared thermal conductivity (QB-Q-02-97) |
| Fe | 0.021% | atomic absorption( CKS-Hl-65) |
| Mg | 0.002% | atomic absorption( CKS-Hl-65) |
| Ca | 0.037% | atomic absorption( CKS-Hl-65) |
| Al | 0.11% | atomic absorption( QBuHi-14-1997) |
| Si3N4 | 99.0% | nitrogen content*2.5039(The ratio of molecular weight of nitrogen to silicon nitride) |
| Material Grade: A | Executive Standard:GB/T308.2-2010;GB/T 31703-2015 | |||||||||||||||||||||||||||
| Item | Standard Requirements | Measured Data1 | Measured Data2 | Measured Data3 | Assessment | |||||||||||||||||||||||
| 1 | Density | g/cm3 | ≥3.20 | 3.24 | 3.24 | 3.24 | I Material | |||||||||||||||||||||
| 2 | Facade | eye-measurement | No crack | qualified | qualified | qualified | G10 | |||||||||||||||||||||
| 3 | Size | outer diameter | ±0(±0) | qualified | qualified | qualified | OK | |||||||||||||||||||||
| 4 | Roundness(2-15) | ≤0.25um | 0.115 | 0.128 | 0.138 | G5/G10 | ||||||||||||||||||||||
| 5 | Surface Roughness | Ra≤0.014 | 0.008 | 0.009 | 0.007 | G5 | ||||||||||||||||||||||
| 6 | Hardness | HV:1300-1600 | 1410 | 1420 | 1430 | I/II Material | ||||||||||||||||||||||
| 7 | Vibrate | ≤35db | 32 | 33 | 34 | G5/G10 | ||||||||||||||||||||||
Size available & Crush strength:
| Size | Crush strength | |
| Kg/particle | KN/particle | |
| 1/8''(3mm) | >35 | >0.35 |
| 1/4''(6mm) | >60 | >0.60 |
| 3/8''(10mm) | >85 | >0.85 |
| 1/2''(13mm) | >185 | >1.85 |
| 3/4''(19mm) | >487 | >4.87 |
| 1''(25mm) | >850 | >8.5 |
| 1-1/2''(38mm) | >1200 | >12 |
| 2''(50mm) | >5600 | >56 |
About Us
Shandong Hualu International Trade Co., Ltd. has over 100 employees and more than 20 years of production and research experience. It mainly produces bearing steel balls, stainless steel balls, ceramic balls, tungsten steel alloy balls, casting balls, stamping balls, plastic balls, copper balls, carbon steel balls, iron balls and other materials balls.
We also can customize and process non-standard size balls(The standard grade:G10-G1000,The standard size:0.5-150mm).Our annual output value more than 8000 tons and annual sales revenue can reach 140 million yuan.
We have advanced physical performance laboratories to ensure that product quality meets high standards. The products are widely used in aviation, aerospace industry, automotive industry, stainless steel bearings, medical equipment, precision instruments and other fields, and are exported to Southeast Asia, the Middle East, Russia, Europe, America, Africa and other countries and regions. Welcome friends from all over the world to consult and visit the factory.
Q1: Can you provide samples?
A: Yes. We can offer it for free.
Q2: What about the MOQ?
A: Inventory items have no MOQ. If no stock, MOQ is 100KG.
Q3: Can you accept OEM/ODM?
A: Yes, we can. Customizing according to your requirement or drawing.
Q4: What's the delivery time?
A:Delivery on the same day for products weighing less than 300 kilograms in stock.
Q5: How about technical support and after-sales service?
A: We have a professional technical support team at your service at any time.
Q6. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery.
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