How are US import duties from Germany calculated?

Start with the base MFN rate for the HTS code, then stack the trade-remedy tariffs that apply to Germany. From Germany, the base MFN rate plus the reciprocal baseline apply, with Section 232 on metals. No FTA preference and no China Section 301. The calculator does the stacking for your exact code and value.

Is there a free-trade agreement with Germany?

No US free-trade agreement applies to this origin, so the base MFN rate plus the reciprocal baseline tariff generally apply.

Germany import duties

Germany (EU) ships machinery, vehicles, instruments and chemicals to the US. There is no free-trade agreement, so the base MFN rate applies along with the reciprocal baseline tariff, and Section 232 reaches German steel, aluminum and copper articles. The China-specific Section 301 duties do not apply.

Reciprocal baselineSection 232 (metals)