
Ball mills are widely used in metallurgy, mining, electricity, building materials, chemicals and other fields, and are the most commonly used crushing equipment. The grinding medium is the ball or cylindrical object that rolls in the ball mill. The grinding medium of ordinary ball mills is mainly metal balls and cylinders, while in the ceramic production industry, ceramic grinding media is mainly used, followed by natural flint and pebbles. The ceramic grinding media listed in my country mainly include alumina, zirconium oxide, silicon carbide, silicon nitride and other series of varieties
Chemical Components | ||||||
Type | Chemical components | |||||
C | Mn | Si | Cr | S | P | |
45# | 0.42-0.48 | 0.50-0.80 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
50Mn | 0.48-0.56 | 0.70-1.00 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
60Mn | 0.57-0.65 | 0.70-1.00 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
65Mn | 0.62-0.70 | 0.90-1.20 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
B2 | 0.75-0.85 | 0.70-0.90 | 0.17-0.37 | 0.40-0.60 | ≤0.030 | ≤0.030 |
B3 | 0.55-0.65 | 0.75-0.90 | 0.20-0.37 | 0.85-1.20 | ≤0.030 | ≤0.030 |
B4 | 0.58-0.66 | 0.65-0.80 | 1.60-1.90 | 0.70-0.90 | ≤0.030 | ≤0.030 |
B6 | 0.97-1.03 | 1.00-1.10 | 0.20-0.30 | 0.50-0.60 | ≤0.025 | ≤0.025 |
Mechanical Properties | ||||||||
Material | Hardness(HRC) | Impact | Falling Times | |||||
Φ20-Φ50 | Φ60-Φ90 | Φ100-Φ150 | ||||||
Surface | Core | Surface | Core | Surface | Core | |||
45# | ≥54 | ≥36 | ≥54 | ≥34 | ≥52 | ≥30 | ≥15 | ≥22000 |
50Mn | ≥58 | ≥38 | ≥58 | ≥36 | ≥55 | ≥32 | ≥15 | ≥22000 |
60Mn | ≥60 | ≥42 | ≥60 | ≥40 | ≥58 | ≥36 | ≥15 | ≥22000 |
65Mn | ≥60 | ≥42 | ≥60 | ≥40 | ≥58 | ≥36 | ≥15 | ≥22000 |
B2 | ≥60 | ≥60 | ≥60 | ≥50 | ≥60 | ≥46 | ≥15 | ≥22000 |
B3 | ≥60 | ≥60 | ≥60 | ≥50 | ≥60 | ≥48 | ≥15 | ≥22000 |
B4 | ≥60 | ≥60 | ≥60 | ≥55 | ≥60 | ≥52 | ≥15 | ≥22000 |
B6 | ≥60 | ≥60 | ≥60 | ≥59 | ≥60 | ≥55 | ≥15 | ≥22000 |














steel, galvanized steel, PPGI, PPGL, copper, aluminum. Our team has focused on the steel industry for 15 years. The company has
established long-term close cooperative relations with well-known domestic steel companies. At the same time, the company's annual
spot reserve exceeds 1000,000 tons, so we can guarantee a short delivery time. Baotai Steel provides services for large
enterprises such as domestic government construction projects, Chinese listed companies, and state-owned enterprises. High-quality
products, low prices, and high-quality services are highly praised by customers. Customers from various countries have signed
agency agreements with Baotai Steel and become Baotai Steel's agents. Baotai Steel's service team is online 24 hours a day to
provide you with professional and high-quality services. At the same time, Baotai Steel also adheres to the concept of win-win,

Q1: What is your MOQ?
A: Usually our MOQ is one container, but it is different for some items, please contact us for details.
Q2:What is your terms of payment?
A:We usually accept T/T in advance, L/C for large sum.If you prefer other payments terms, please discuss.
Q3:What is your delivery time?
A:For products in stock, we can ship it within 7 days after receiving the deposit. For custom order, production time is 15-30 workdays after received the deposit.
Q4:How could you guarantee your products?
A:Mill Test Certification is supplied with shipment, We also accept and support the third-party inspection.We also could issue the warranty to customer to guarantee the quality.
Q5: Will all costs be clear?
A:Our quotation is easy to understand and will not incur any additional costs.