Chemical composition | ||||||||||||||||
Material | C | Si | Mn | P | S | Ni | Cr | Mo | ||||||||
304 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 8.0-10.5 | 18.0-20.0 | - | ||||||||
304L | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 8.0-13.0 | 18.0-20.0 | - | ||||||||
316 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 10.0-11.0 | 16.0-18.0 | 2.0-3.0 | ||||||||
316L | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 10.0-11.0 | 16.0-18.0 | 2.0-3.0 | ||||||||
420 | 0.26-0.35 | ≤1.00 | ≤1.25 | ≤0.04 | ≤0.03 | ≤0.60 | 12.0-14.0 | - | ||||||||
420C | 0.36-0.43 | ≤0.80 | ≤0.80 | ≤0.04 | ≤0.03 | ≤0.60 | 12.0-13.5 | - | ||||||||
440 | 0.90-1.00 | ≤0.80 | ≤0.80 | ≤0.04 | ≤0.03 | ≤0.60 | 16.0-18.0 | 0.4-0.7 | ||||||||
440C | 0.95-1.10 | ≤0.80 | ≤0.80 | ≤0.04 | ≤0.03 | ≤0.60 | 16.0-18.0 | 0.4-0.7 | ||||||||
Grade:G10 to G1000 | ||||||||||
Grade | Ball diameter variation | Deviation from spherical from | Surface roughness | Lot diameter variation | Nominal ball deviation tolerance | |||||
Vdws | △Sph | Ra | Vdwl | Tdn | ||||||
not over | ||||||||||
μm | ||||||||||
10 | 0.25 | 0.25 | 0.025 | 0.5 | * | |||||
16 | 0.4 | 0.4 | 0.032 | 0.8 | * | |||||
20 | 0.5 | 0.5 | 0.05 | 1 | * | |||||
28 | 0.7 | 0.7 | 0.05 | 1.5 | * | |||||
40 | 1.0 | 1.0 | 0.08 | 2 | * | |||||
60 | 1.5 | 1.5 | 0.10 | 3 | * | |||||
100 | 2.5 | 2.5 | 0.125 | 5 | ±12.5 | |||||
200 | 5 | 5 | 0.5 | 10 | ±25 | |||||
500 | 13 | 13 | * | 25 | ±50 | |||||
1000 | 25 | 25 | * | 50 | ±125 | |||||
1.Can you provide sample free?
Yes ,we can provide free samples with in 0.5kg.
2.What kind of payment terms you can accept?
We can accept T/T,L/C, Western Union and Paypal.
3.What about your steel ball's quality?
Checking in the whole manufacturing process &100% inspection before shipment ensure the quality of our products.
4.What's your packing method?
A) Inner packing: Dry packing or oil packing are provided according to you needs.
B) Outer packing:
1)volatile rust preventive paper + poly bag + iron drum + wooden / iron pallet.
2)25kg poly bag + carton + wooden pallet or wooden box.
3)customized packing.
5.What's your delivery time?
Within 3-30 days according to your required size and quantity.
6.Is your steel ball competitive?
Yes, We are steel ball manufacture more than 30+ years.
