ASTM B557 is the test methods standard for tension testing wrought and cast aluminum- and magnesium-alloy products. It generates comparable tensile data for these light alloys across suppliers and lots. To match specimens and fixturing to a B557 program, talk with our team.
What ASTM B557 Covers
The standard applies to aluminum- and magnesium-alloy products in wrought and cast forms, covering how to prepare specimens, apply load, and determine tensile properties for these materials specifically. Their lower strength and modulus make grip choice and alignment important to avoid slip and bending.
Properties Reported
A B557 test yields tensile strength, yield strength, and elongation, with reduction of area where applicable. Results support alloy and temper qualification, incoming inspection, and production control.
Preparing Specimens
Clean, accurately machined coupons are essential for light alloys, where surface finish and gauge tolerances influence the result. Automated CNC preparation holds consistent geometry across a batch. To configure a setup for aluminum and magnesium coupons, request a quote.
Reading the Designation
Cited with a year suffix such as ASTM B557-YY. Confirm the edition before finalizing specimens and reporting.
Related Standards
ASTM E8/E8M is the general metals tensile method, and ISO 6892-1 is the ISO room-temperature equivalent.
Request a Quote
Preparing aluminum or magnesium tensile specimens? Request a quote and our team will help you build a system matched to your specimen forms and alloy handling.
TensileMill CNC products for ASTM B557
Our specimen-preparation systems and testing equipment compatible with ASTM B557:
TensileMill CNC MICRO – Precision Flat Tensile & Impact Micro Machine
MICRO – Precision Flat Tensile & Impact Sample Preparation
TensileTurn CNC – Industrial Upgrade – Round Tensile Sample Preparation Machine
Industrial Upgrade – Round Tensile Sample Preparation
Electro Mechanical Universal Testing System 5 kN / 50 kN with Precision Load Cell
Electro-Mechanical UTM · 5 kN / 50 kN with Precision Load Cell
Bring ASTM B557 testing in-house with TensileMill CNC
Adding capacity or replacing older equipment? TensileMill CNC can support your ASTM B557 program. That typically means universal testing machines, wedge or pneumatic grips, and flat and round specimen-preparation systems. Tell us your materials, specimen forms, and required test sections, and our team will match the right configuration.