Introducing our precision-engineered Forged Grinding Media Ball, specifically crafted for optimal performance in mines and industrial applications. Embrace the superior quality and durability.
PRODUCT DESCRIPTION
1. Grade: High-quality options including B2, B3, 45#, 50Mn, 60Mn, 65Mn, ensuring versatility and robustness for varied applications.
2. Diameter: Available in a wide range from 20mm to 150mm, catering to diverse operational needs.
3. Hardness: Guaranteed hardness between 55-65HRC, promising long-lasting performance and reliability.
4. Breakage Rate: Remarkably low breakage rate of less than 1%, enhancing operational efficiency.
5. Impact Value: Impressive impact resistance with values exceeding 12j/cm², ensuring toughness under stress.
6. Endurance impact test times: Withstands ≥20000 impact test cycles, demonstrating exceptional durability.
7. Uniform hardness, outstanding wear resistance, and elevated impact value ensure unmatched performance.
Forged Grinding Media Steel Ball Chemical Composition: Crafted with precision to deliver unmatched quality and performance.
Materials | C% | Si% | Mn% | P% | S% | Cr% |
B2 | 0.70-0.85 | 0.17-0.37 | 0.70-1.00 | ≤0.035 | ≤0.035 | 0.4-0.6 |
B2-1 | 0.55-0.70 | 0.15-0.30 | 0.65-0.85 | ≤0.020 | ≤0.020 | 0.70-1.10 |
High Carbon B2 | 0.85-1.10 | 0.15-0.45 | 0.40-1.20 | ≤0.035 | ≤0.035 | 0.20-1.10 |
B3 | 0.58-0.66 | 1.70-1.90 | 0.68-0.80 | ≤0.030 | ≤0.030 | 0.78-0.90 |
45# | 0.42-0.50 | 0.17-0.37 | 0.5-0.8 | ≤0.035 | ≤0.035 | 0.25max |
B4 | 0.65-0.75 | 1.20-1.40 | 0.50-0.70 | ≤0.025 | ≤0.025 | 0.85-1.00 |
B6 | 0.75-0.90 | 0.17-0.37 | 0.8-1.02 | ≤0.035 | ≤0.035 | 0.88-0.98 |
B6-1 | 0.82-0.90 | 0.15-0.35 | 0.90-1.05 | ≤0.020 | ≤0.020 | 0.88-0.98 |
BU | 0.95-1.05 | 0.15-0.35 | 0.95-1.05 | ≤0.025 | ≤0.025 | 0.45-0.55 |
1090 | 0.90-1.10 | 0.17-0.37 | 0.60-0.90 | ≤0.025 | ≤0.025 | ≤0.025 |
42CrMo | 0.38-0.45 | 0.20-0.40 | 0.50-0.80 | ≤0.035 | ≤0.035 | 0.90-1.20 |
40Cr | 0.37-0.45 | 0.20-0.40 | 0.50-0.80 | ≤0.035 | ≤0.035 | 0.80-1.10 |
65MN | 0.62-0.70 | 0.17-0.37 | 0.90-1.20 | ≤0.035 | ≤0.035 | ≤0.25 |
60MN | 0.57-0.65 | 0.17-0.37 | 0.70-1.00 | ≤0.035 | ≤0.035 | ≤0.25 |
50MN | 0.48-0.56 | 0.17-0.37 | 0.70-1.00 | ≤0.035 | ≤0.035 | ≤0.25 |
Detailed Specification of Forged Grinding Media Steel Ball: A testament to superior engineering and quality.
Diameter(mm) | Diameter Tolerance(mm) | Surface Hardness(HRC) | Impact Toughness(j/cm2) |
Φ20 | +2, -1 | >60HRC | ≥12j/cm2 |
Φ25 | |||
Φ30 | |||
Φ40 | |||
Φ50 | |||
Φ60 | +3, -2 | ||
Φ70 | |||
Φ80 | |||
Φ90 | |||
Φ100 | +4, -2 | ||
Φ110 | |||
Φ120 | >58HRC | ||
Φ130 | |||
Φ140 | +4, -3 | >55HRC |
Explore Our Products:

Discover Our State-of-the-Art Factory:
Shandong Jinchi Heavy Industry Joint-stock Co., LTD is a distinguished professional factory specializing in the production of high-quality forged and hot rolled grinding balls, steel rods, and cylpebs. For 28 years, we have been a leader in China, delivering an annual output exceeding 100,000 tons. Our facility boasts 8 world-class advanced forging and automatic rolling production lines, adept at meeting the complex demands of our clientele.
Shandong Jinchi's commitment to excellence is affirmed by our prestigious international and industrial certifications, including TUV ISO9001, ISO14001, and ISO45001. With dual certification from SGS and BV, our factory is recognized for its quality. Our cutting-edge laboratory, equipped with state-of-the-art testing equipment like spectrometers, hardness testers, drop testers, and impact testers, ensures perpetual quality control and traceability throughout every stage of production.
Our growing network of satisfied customers spans Southeast Asia, Africa, and Latin America, covering more than 40 countries. We have fostered strong business relationships with prestigious large-scale mining companies, cement plants, thermal power plants, and chemical plants, all of whom commend our products and services.



Packaging: Ensuring safe and secure delivery with robust packaging solutions tailored to customer needs.

Advanced Testing Equipment: Ensuring precision and reliability in every product through comprehensive testing measures.



FREQUENTLY ASKED QUESTIONS
Q1: What is the advantage of your company?
A: We are seasoned manufacturers with 28 years of expertise in crafting high-quality steel balls. Our experience is your assurance of reliability.
Q2. In which countries are your products sold?
A: Our network spans globally, including Mexico, Canada, Brazil, and more. We have established branches in Australia to serve our clientele better.
Q3: Are you trading company or manufacturer?
A: We are a factory, ensuring direct and streamlined manufacturing services.
Q4: How long is your delivery time?
A: Typically, delivery takes 10-15 days, varying with order quantity, ensuring timely service.
Q5: Do you provide samples? Is it free or extra?
A: Yes, we provide complimentary samples; however, freight costs are the responsibility of the recipient.
Q6: What are your terms of payment?
We accept T/T (30% in advance, 70% upon B/L copy);
OR L/C (100% Irrevocable Letter of Credit at sight), offering flexible payment options.