High-grade Silicon Prices Broke Through 30,000 yuan/mt in Aug, Likely to Further Rise in Sep

Published: Sep 14, 2021 17:00
Silicon prices extended gains in August. On the supply side, the yield rate of chemical-grade #421 silicon was relatively low due to the low quality of cleaned coal, leading to the tight supply of chemical-grade #421, of which the prices rose significantly and drove up metallurgical-grade silicon prices. The overall silicon supply was tight in August.

SHANGHAI, Sep 14 (SMM) – Silicon prices extended gains in August. On the supply side, the yield rate of chemical-grade #421 silicon was relatively low due to the low quality of cleaned coal, leading to the tight supply of chemical-grade #421, of which the prices rose significantly and drove up metallurgical-grade silicon prices. The overall silicon supply was tight in August.

According to SMM survey, as of August 31, prices of #553 silicon with oxygen were around 23,250 yuan/mt in east China, an increase of 55% from the previous month, and the prices of #421 silicon were around 28,100 yuan/mt, an increase of 70% on the month. The prices of some high-grade silicon broke through 30,000 yuan/mt. Silicon prices keep hitting new highs.

Downstream aluminium alloy enterprises were hard to make profits as silicon prices exceeded aluminium prices. Supply and demand in the aluminium alloy industry weakened simultaneously.

The downstream organic silicon and polysilicon companies still had ample profit margins, and they maintained normal procurement to ensure the production. The organic silicon companies scheduled to commission in H2 2021 also started to purchase raw materials. The strong demand pushed up the silicon prices.

High-grade silicon prices have stabilised above 30,000 yuan/mt, and the prices of other silicon specifications are approaching 30,000 yuan/mt. The rainy season in Yunnan is likely to end earlier in October, which triggered local plants’ concerns of shorter production period for lack of hydropower. Therefore, silicon prices are expected to rise further in September.

Data Source Statement: Except for publicly available information, all other data are processed by SMM based on publicly available information, market communication, and relying on SMM‘s internal database model. They are for reference only and do not constitute decision-making recommendations.

For any inquiries or to learn more information, please contact: lemonzhao@smm.cn
For more information on how to access our research reports, please contact:service.en@smm.cn
Related News
[SMM Analysis]  Tungsten Market Shifts to High-Level Shock; Sentiment Turns Cautious Amid Intensified Supply-Demand Game
9 mins ago
[SMM Analysis] Tungsten Market Shifts to High-Level Shock; Sentiment Turns Cautious Amid Intensified Supply-Demand Game
Read More
[SMM Analysis]  Tungsten Market Shifts to High-Level Shock; Sentiment Turns Cautious Amid Intensified Supply-Demand Game
[SMM Analysis] Tungsten Market Shifts to High-Level Shock; Sentiment Turns Cautious Amid Intensified Supply-Demand Game
SMM March 13: This week, China’s domestic tungsten market exhibited high-level oscillations with intensified supply-demand competition. Multiple mines put products up for auction during the week, but transactions were bleak.As of March 13, tungsten prices remained largely stable, yet market sentiment became extremely divided.
9 mins ago
Titanium Market Structure Becomes Clearer: Upstream Consolidates at Weak Levels, Midstream and Downstream Strength Expected [SMM Titanium Weekly Review]
23 hours ago
Titanium Market Structure Becomes Clearer: Upstream Consolidates at Weak Levels, Midstream and Downstream Strength Expected [SMM Titanium Weekly Review]
Read More
Titanium Market Structure Becomes Clearer: Upstream Consolidates at Weak Levels, Midstream and Downstream Strength Expected [SMM Titanium Weekly Review]
Titanium Market Structure Becomes Clearer: Upstream Consolidates at Weak Levels, Midstream and Downstream Strength Expected [SMM Titanium Weekly Review]
[SMM Titanium Weekly Review: Titanium Dioxide Showed Signs of Recovery; Diverging Strength Across the Titanium Industry Chain Market This Week] This week, the titanium industry chain in China showed pronounced structural divergence, with the tug-of-war between sellers and buyers across upstream and downstream segments intensifying and cost pass-through facing obstacles. Overall, the sector was characterized by a combination of weak recovery and localized strong support. Trading in upstream titanium ore and titanium slag was sluggish. Downstream processing enterprises tightly controlled costs, with procurement consistently maintained at a pace driven by rigid demand. Coupled with inventory at high levels across the industry, the raw material end remained under pressure, enterprises’ willingness to operate stayed weak, capacity release was constrained, and the supply-demand imbalance continued to stand out. In the midstream titanium dioxide segment, pressure from elevated costs of raw materials and energy sharply increased production-side strain. Enterprises held prices firm and showed a strong willingness to sell, and while domestic trade demand did not see a noticeable increase in volume—relying only on rigid-demand support—overseas markets still demonstrated a certain degree of resilience, leaving the overall market running relatively strong. The downstream sponge titanium and titanium products segments performed impressively: sponge titanium inventories remained low, and, together with robust downstream restocking demand, top-tier enterprises proactively adjusted prices, with enterprises showing strong confidence in holding prices firm. The titanium products market saw stable supply and demand: the supply-side operating rate was steady, while demand-side differentiation was evident. Civilian applications were mainly driven by rigid-demand restocking, while orders in high-end fields such as aerospace and military industries were steady. The market recovered steadily, and differences in the pace across segments of the industry chain also set the tone for subsequent market dynamics.
23 hours ago
Manganese-based Battery Materials: Differentiated Trends, Cost-Supported Stability
Mar 13, 2026 13:52
Manganese-based Battery Materials: Differentiated Trends, Cost-Supported Stability
Read More
Manganese-based Battery Materials: Differentiated Trends, Cost-Supported Stability
Manganese-based Battery Materials: Differentiated Trends, Cost-Supported Stability
This week, China’s domestic manganese-based battery materials market has shown a differentiated operation trend. The price of battery-grade manganese tetroxide has slightly declined, the price of electrolytic manganese dioxide has slightly increased, and lithium manganate has maintained a weak balance of supply and demand.
Mar 13, 2026 13:52