O-30-H Beryllium Optical Grade

Alternative and trade names
O-30-H

Want to keep this datasheet? Save it now in your required format

Description

Materion’s O-30-H beryllium was originally developed to make the mirrors for the James Webb Space Telescope (JWST).

The unique combination of property characteristics make this material critical for expanding optical space applications. O-30-H was featured in Astro2010: The Astronomy and Astrophysics Decadal Survey, Technology Development Papers, no. 23. In Enabling Future Space Telescopes: Mirror Technology Review and Development Roadmap, Dave Baiocchi of RAND Corporation and H. Philip Stahl of NASA Marshall discuss O-30-H beryllium metal and the ways it advances space optics.

In addition to the low scatter optics of O-30-H, this metal is well suited for a variety of other space applications. With the highest thermal isotropy of any grade of the beryllium metals that we offer, it is a cryogenically optimal substrate material.

This material data has been provided by Materion Brush GmbH.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

All categories

Properties

General

Property	Temperature	Value	Comment
Density	23.0 °C	1.85 g/cm³ Show Supplier Material materials with Density of 1.85 g/cm³	Theoretical density for BeO: 0.5%
Grain size		15 μm Show Supplier Material materials with Grain size of 15 μm	max., ASTM E-112

Mechanical

Property	Temperature	Value	Comment
Elongation	23.0 °C	2 % Show Supplier Material materials with Elongation of 2 %	min.
Tensile strength	23.0 °C	345 MPa Show Supplier Material materials with Tensile strength of 345 MPa
Yield strength Rp0.2	23.0 °C	207 MPa Show Supplier Material materials with Yield strength Rp0.2 of 207 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	23.0 °C	1.12E-5 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.12E-5 1/K	overall average for 5-65°C

Chemical properties

Property	Value	Comment
Aluminium	0.07 % Show Supplier Material materials with Aluminium of 0.07 %	max.
Beryllium	99 % Show Supplier Material materials with Beryllium of 99 %	min., BeO: 0.5% max
Carbon	0.012 % Show Supplier Material materials with Carbon of 0.012 %	max.
Magnesium	0.07 % Show Supplier Material materials with Magnesium of 0.07 %	max.
Other	0.04 % Show Supplier Material materials with Other of 0.04 %	max., other metallic impurities each
Silicon	0.07 % Show Supplier Material materials with Silicon of 0.07 %	max.

Technological properties

Property
Application areas	It is used in space optical applications due to the lower level scatter and ease to polish. This beryllium metal was used in the primary optics for the James Webb Space Telescope.

O-30-H Beryllium Optical Grade

Description

Ashby charts

Applications

Materials by this supplier

Properties