Curated Engineering Evaluation

Intent: Fabrication selection between deep-drawing cold ductility (70/30 brass) and automated high-speed turning machinability (leaded brass).

Engineering Verdict & When to Choose Each

C26000 or C36000: forming and turning lead to different choices

By Mat Grades Editorial Desk · Updated 2026-11-14

Choose C26000 when the required forming route and supplied condition justify a ductile wrought brass. Choose C36000 when machining efficiency is central and the service and secondary operations permit the alloy. A free-cutting rating should not be interpreted as evidence of equal deep-drawing behavior.

A threaded fitting and a drawn cup can use similar-looking yellow metal for very different reasons. Trial the difficult operation first: a close thread or deep bore for the fitting, and the actual drawing sequence for the cup. Include deburring, inspection and any subsequent joining in the cost comparison.

Review the working fluid and applicable product restrictions before release. Traditional free-cutting brass compositions may require a substance declaration for the intended market or use. If an alternative alloy is proposed, repeat the forming or machining qualification instead of assuming that all brass grades share the same shop behavior.

C26000 Cartridge Brass 70/30: evidence to check

C26000 Cartridge Brass 70/30 has 135 cataloged property rows. Electrical Conductivity is reported as 28 % IACS (typical; tested at 20 °C). Modulus of Elasticity (Tension) is reported as 110.3 GPa (typical; further condition not stated). The record identifies ASTM B36/B36M; check its scope and ordered edition. These are source-scoped examples rather than unrestricted design allowables. Read the full row context and certificate before using a value for acceptance; an absent value is not zero or a performance failure.

C36000 Free-Cutting Brass: evidence to check

C36000 Free-Cutting Brass has 97 cataloged property rows. Electrical Conductivity is reported as 26 % IACS (typical; tested at 20 °C). Modulus of Elasticity (Tension) is reported as 96.5 GPa (typical; further condition not stated). The record identifies SAE J461; check its scope and ordered edition. These are source-scoped examples rather than unrestricted design allowables. Read the full row context and certificate before using a value for acceptance; an absent value is not zero or a performance failure.

Four questions before approval

Which operation creates the difficult feature?
Is the trial performed in the supplied temper and form?
Are fluid exposure and joining requirements reviewed?
Are any required substance declarations tied to the actual stock?

Check the linked material records for the complete source trail. Read the methodology before comparing minimum requirements with typical measurements. No direct substitution or qualified fabrication procedure is implied.

Material Comparison

Compare verified engineering materials side by side with condition-specific mechanical properties.

PDF Excel

Material A (Baseline)

Heat Treatment / Temper Context:

Material B (Comparison)

Heat Treatment / Temper Context:

Temper & Metallurgical Context Qualification:The selected records contain different or missing source contexts. Values shown in separate rows are not directly matched. Typical and estimated values are not guaranteed minima; matching context alone does not establish interchangeability.

1. Identity, Classification & Standards