Biden Just Raised Section 301 Tariffs on $18 Billion of Chinese Goods, What the New Rates on Battery Materials, Chemicals, and Industrial Products Mean for Your Landed Costs

The USTR announced the results of its statutory four-year Section 301 review on 14 May, and the headline numbers are big. EVs from China are going to 100 per cent duty. Lithium-ion EV batteries are going to 25 per cent. Lithium-ion non-EV batteries go to 25 per cent in 2026. Solar cells and modules are doubling to 50 per cent. Medical syringes and needles are going to 50 per cent. Critical minerals like natural graphite and permanent magnets get new 25 per cent duties. Most of the new rates are effective 1 August 2024, though a handful are phased into 2025 and 2026.

For chemical importers, the immediate question is not about EVs. It’s about what the battery-materials and critical-minerals chapter means for the precursor chemicals that flow through your supply chain, and what happened or didn’t happen to the Section 301 List 3 chemical tariffs that have been sitting at 25 per cent since 2019. The short answer is that the existing chemical List rates held at 25 per cent without increase, but several battery-adjacent chemical precursors got dragged into the new increases, and you need to work out which of your HS codes are actually affected before 1 August.

This post walks through the specific HS codes that moved, the ones that stayed, what the combined duty picture looks like for battery-material importers, the landed cost math for a realistic chemical-precursor import scenario, and the actions you need to take in the next 10 weeks if you’ve got open POs landing after the effective date.

What Actually Changed and When

The USTR notice covers about $18 billion of current import value from China, which is a small fraction of total US-China trade but concentrated in strategic sectors. The increases are not uniform. Some take effect 1 August 2024, some 1 January 2025, and some 1 January 2026. Here’s the picture for the categories that matter most to chemical importers and to anyone touching battery supply chains.

Electric vehicles from China go from 25 per cent to 100 per cent effective 1 August 2024. That’s not a chemical line item, but it’s the framing number that gets everything else categorised. Lithium-ion EV batteries move from 7.5 per cent to 25 per cent effective 1 August 2024. Lithium-ion non-EV batteries (things like grid-storage batteries, industrial stationary batteries, and many consumer applications) move from 7.5 per cent to 25 per cent effective 1 January 2026. Battery parts also move to 25 per cent effective 1 August 2024.

Natural graphite and permanent magnets, both critical inputs for battery and motor manufacturing, get new 25 per cent duties effective 1 January 2026. Other critical minerals including manganese, cobalt, aluminium, tungsten, and several others get 25 per cent duties effective 1 August 2024. Solar cells (whether or not assembled into modules) go from 25 per cent to 50 per cent effective 1 August 2024. Semiconductors move to 50 per cent effective 1 January 2025. Ship-to-shore cranes get a new 25 per cent duty effective 1 August 2024. Medical syringes and needles go from 0 to 50 per cent effective 1 August 2024. Personal protective equipment including respirators and face masks goes from 0 to 25 per cent effective 1 August 2024.

Crucially for chemical importers, the Section 301 List 3 chemical tariffs did not increase. Benzene derivatives, plasticisers, coating resins, polyols, and the broad HS 28 and HS 29 categories that have been paying 25 per cent since 2019 continue to pay 25 per cent. That’s the structural context. The List rates held, but the battery-materials and critical-minerals side saw fresh increases.

The Battery-Precursor Chemicals That Got Pulled In

Here’s where chemical importers need to focus. Several chemical precursors used in battery manufacturing are now covered by the new critical-minerals tariff increases, either directly as the named commodity or indirectly through classification rulings that CBP is already starting to apply.

The categories to check carefully include lithium carbonate and lithium hydroxide (HS 2836.91 and HS 2825.20), cobalt sulphate and cobalt hydroxide (HS 2833.29 and HS 2825.80), nickel sulphate (HS 2833.24), manganese sulphate (HS 2833.29), synthetic and natural graphite (HS 3801.10 and HS 2504), and electrolyte formulations containing lithium hexafluorophosphate (HS 2826.90 and HS 3824.99 depending on the mixture). Several of these were already on Section 301 List 3 at 25 per cent. Several were not. The USTR notice and the USITC tariff schedule amendments coming in June will sort out the exact overlap, and the worst-case scenario for some importers is that a precursor which was on List 3 at 25 per cent now gets recategorised under the new critical-minerals line at 25 per cent from 1 August with no net change, while other precursors move from 0 per cent or List 1 rates to 25 per cent.

If you’re importing any of those HS codes, or if you’re importing a mixed preparation under HS 3824 that contains lithium, cobalt, nickel, manganese, or graphite as a material component, you need your customs broker running a full tariff-engineering review this week. The reclassification work between the existing List 3 and the new critical-minerals chapter is going to drive real landed-cost outcomes depending on how your product is classified at entry.

The Combined Duty Picture for Battery Materials

Let’s lay out what an importer of Chinese lithium-ion battery cells is actually paying, all-in, after 1 August. The base MFN duty on HS 8507.60 (lithium-ion batteries) is 3.4 per cent. Section 301 moves from 7.5 per cent to 25 per cent. Add the MPF at 0.3464 per cent capped and the HMF at 0.125 per cent where applicable. The combined effective rate on the CIF value lands around 29 per cent once you account for base duty, 301, and fees. That’s a structural change from the roughly 11 per cent effective rate most battery importers have been modelling for the past two years.

For solar cells, the picture is worse. The MFN rate on HS 8541.42 is 0 per cent. The existing Section 201 safeguard rate on crystalline silicon cells is separately applied. Section 301 moves from 25 per cent to 50 per cent. Once you combine the 201 safeguard, the 301 rate, and the fees, you’re at an effective rate well above 50 per cent on a Chinese-origin cell or module landing in the US after 1 August.

For the chemical precursors that feed battery manufacturing, here’s a worked example of the combined duty picture for HS 2836.91 lithium carbonate, which many importers are moving in drums or supersacks from Chinese suppliers into US cathode-material producers.

That wide reclassification range is where most importers will either win or lose. If your customs broker can document that the material is properly classified under HS 2836.91 and is not subject to the new critical-minerals line, you stay at roughly 29 per cent combined. If the reclassification pushes you into the critical-minerals chapter with the additional 25 per cent, you’re looking at an effective rate north of 50 per cent. The USITC and CBP guidance coming in June and July will settle this, but the importers who engage with a tariff specialist in May and June will have a much better chapter-and-classification position than the ones who wait for the August effective date.

The Landed Cost Worked Example You Can Actually Use

Let’s work a realistic scenario. You’re importing 200 MT of battery-grade lithium carbonate, CAS 554-13-2, from a Chinese supplier based near the Sichuan lithium-processing cluster, shipped via Shanghai to your cathode-material customer in Nevada via the Port of Los Angeles. Your FOB Shanghai price is $15,800 per MT (lithium carbonate spot pricing has softened materially from the 2022 peaks), each 20-foot container holds 20 MT of product in supersacks, so you’re running 10 containers for 200 MT and a goods value of $3,160,000.

Here’s your landed cost per MT under the pre-1-August duty structure:

Now run the worst-case post-change scenario where CBP reclassifies your lithium carbonate entry into the new critical-minerals chapter, adding a further 25 per cent on top of the existing List 3 rate. Your duty layer moves from 28.7 per cent combined to roughly 53.7 per cent combined. That additional 25 per cent on a goods value of $3,160,000 is $790,000 of incremental duty on a single shipment. Per MT, you’ve moved from $20,646 landed to roughly $24,596 landed, which is a $3,950 per MT increase that completely changes the economics of your downstream cathode contract.

If your downstream cathode customer is a US gigafactory with a fixed-price offtake agreement signed in 2023, you cannot pass that increase through without a contract amendment. If the contract has an index-linked duty escalator, you can, but most 2023-vintage offtake agreements in the battery sector don’t. That’s a material conversation you need to have with your customer before 1 August, not after.

The Exclusion Process and Why It Matters

Alongside the tariff increases, the USTR also announced a limited Section 301 exclusion process for machinery used in domestic manufacturing. That exclusion process is narrow. It does not cover chemical precursors. It does not cover battery cells. It covers specific industrial machinery HS codes under chapters 84 and 85, and the exclusion application window runs through a defined period in 2024.

For chemical importers, there is no current exclusion pathway for the new increases. Historical List 3 exclusions that were granted in 2019 and 2020 and later extended remain in force only for the specific importers and HS subheadings that held active exclusions. There is no new broad exclusion round for chemicals.

What that means practically is that if you’re importing a chemical or battery precursor that’s caught by the new increases, your options are narrow. Renegotiate FOB pricing with your supplier, find a non-China origin alternative, apply for a specific product exclusion if you meet the USTR criteria (though the bar is high and most chemical importers will not qualify), or absorb the cost. Most chemical importers will spend the next 10 weeks on a mix of the first two options.

What You Need to Do Before 1 August

Here’s the action list, and it’s time-sensitive because 1 August is 11 weeks away and the supply chain decisions cascade.

First, pull every active and forecast PO for Chinese-origin chemicals, battery precursors, and critical minerals landing in the US between 1 August and 31 December. Build a spreadsheet that lists HS code, CAS number, quantity, FOB value, forwarder, carrier, and estimated landing date. This is your exposure register.

Second, for each line, get a tariff-engineering review from a specialist customs broker. The question is whether your current classification holds under the new regime, whether there’s a legitimate classification alternative that moves the product out of a newly-tariffed line, and whether the supplier can adjust the product specification or documentation to support a different classification. Tariff engineering is not evasion; it’s getting the classification right. Most mid-market importers are leaving money on the table by not doing this work.

Third, model the landed-cost impact for each line under the new rates. Compare against the equivalent landed cost from a non-China origin supplier. For battery precursors specifically, Korean, Japanese, Australian, and Chilean suppliers are all viable alternatives for lithium products, Indonesian and Filipino suppliers for nickel, and Australian and Canadian suppliers for graphite. The qualification timeline for a new supplier on battery-grade chemistry is 6 to 12 months, so if the math says switch, you should have started the qualification six months ago. Start now for Q2 2025.

Fourth, talk to your downstream customer about duty pass-through or contract amendments. If your contract doesn’t have an index-linked duty escalator, this is the moment to negotiate one. The tariff news is public, the effective date is public, and a well-framed conversation about index-linked pricing is easier now than it will be in late July.

Fifth, look at front-loading before 1 August if your working capital and warehouse capacity allow it. Bringing in 60 to 90 days of forward inventory under the current duty rate, rather than the post-1-August rate, can absorb real tariff cost for product you’re going to consume anyway. The trade-off is cash tied up in inventory, so run the math against your cost of capital.

The Structural Picture for Chemical Importers

Zooming out, the 14 May announcement is a continuation of a trend rather than a rupture. Section 301 chemical tariffs have been in place since 2018. The four-year review locked in existing rates rather than rolling them back, and added new rates on battery, critical-minerals, and green-tech categories. Nothing in the announcement suggests the chemical List rates are going to come off under this administration, and the rhetoric from both political parties ahead of November’s election is directionally more protectionist, not less.

If you’ve been running your landed-cost model on an assumption that Section 301 chemical rates might come off post-2024, that assumption is now formally dead. Your planning horizon should assume 25 per cent List 3 rates stay in place through at least 2028, and should assume the critical-minerals and battery-precursor increases layer on top for any product in those categories.

Your next concrete action this week: pull the exposure register, book the tariff-engineering review, and get a landed-cost model update on your desk before the end of May. The importers who do that work in May will be priced, supplied, and contracted correctly on 1 August. The ones who wait until July will be buying at spot, paying full retail on the new duties, and absorbing margin they don’t need to absorb.