Pegasus Glassworks, Inc.

Products

Pegasus Glassworks, Inc. has a wide array of glass products that have been developed to address particular market needs. All glasses can be made as solid rods, thin or thick wall tubing, or special cross section bars up to 1.1 meters or 48" long. A second draw is available for further reducing to fiber size from a single preform or different combinations of glass preforms. Pegasus Glassworks, Inc. also has the capabilities to provide these glasses in frit or powder form if required.

Historically our glasses have been classified based on their applications as:

Spectral Absorption

Etchable

Radiation Shielding

High Temperature

Surface Reflective

Miscallaneous

All glasses in each of these categories can be customized to suit particular requirements. Pegasus Glassworks, Inc. has capabilities of modifying any of the following properties:

• Coefficient of Thermal Expansion

• Littleton Softening Temperature

• Density and Refractive Index

• Resistivity to Acid Etching

• Spectral Transmission in Visible, UV and IR

• Young’s Modulus

• Surface Electrical Conductivity after High Temperature Reduction

• Matching Properties for Cladding or Coating to Existing Glass, Ceramic or Metal Physical properties of our products are given in individual tables based on their classification, with some salient features and typical applications. For a complete list of products and their properties

Spectral Absorption Glasses

High doping of transition metal oxides (MOx) will block essential parts of UV and visible light when applied as clad or EMA (Extra Mural Absorption) glass in fiberoptic systems. The average light transmittance through 0.35mm thickness of these glasses is under 0.1%.

With the wide variety in their glass properties, customers can usually select a glass to match their needs. Another added feature in this group is the availability of an option to choose leaded or lead-free glasses with similar physical properties. Please call our customer service at (508) 347 5656 or email at bgraves@pegasusglassworks.com for further information.

Glass Type	CTE /^oC	T_g^oC	T_s^oC	n_D	r	Salient Features
PM01	93	466	627	1.65	3.9	UV absorbing
PM02	93	422	604	1.66	4	High doping of transition metal oxides (MO_x) block essential parts of UV and visible light. The average light transmittance through 0.35mm thickness is under 0.1%.
PM03	74	544	710	1.54	2.6
PM04	89	468	624	1.65	3.9
PM05	91	495	647	1.61	2.8
PM06	88	580	685	1.68	3.9

Etchable Glass

A combination of high chemical resistivity in an ambient environment and high acid etchability makes these glasses unique among all existing etchable glass systems in the market.

With the wide variety in their glass properties, customers can usually select a glass to match their needs. Please call our customer service at (508) 347 5656 or email at bgraves@pegasusglassworks.com. For further information.

Glass Type	CTE /^oC	T_g^oC	T_s^oC	n_D	r	Salient Features
PM07	91	503	617	1.51	2.4	Combination of high chemical resistance in ambient environment and high acid etchability. Etching rates range from 4.2 m/min to 11 m/min.
PM08	96	560	663	1.76	4.2
PM09	88	522	638	1.59	2.4
PM10	96	605	699	1.73	4.2
PM11	85	572	679	1.75	4

Radiation Shielding Glasses

High lead containing glasses have been developed for the particular applications in medical devices industry. These glasses have been used to effectively shield 95% of X-ray radiation in their particular applications.Please call our customer service at (508) 347 5656 or email at bgraves@pegasusglassworks.com. For further information.

Glass Type	CTE /^oC	T_g^oC	T_s^oC	n_D	r	Salient Features
PM12	98	358	456	1.98	6.1	Heavy lead, X-ray absorbing glasses
PM13	101	346	450	1.98	6.1	Heavy lead, X-ray absorbing glasses

High Temperature Surface Resistive Glasses

These specialty glasses were developed for the electronic industry. A semiconductive surface layer with controlled resistivity can be developed after reduction of this group of glasses at elevated temperature. As a high performing secondary emitter, its unique characteristics provide high gain and low noise on electron multiplier devices. Also by their very nature of having higher lead content, they have high refractive indices combined with high densities. With the range of other physical properties these glasses provide opportunities for use in various applications.Please call our customer service at (508) 347 5656 or email at bgraves@pegasusglassworks.com for further information.

Glass Type	CTE /^oC	T_g^oC	T_s^oC	n_D	r	Salient Features
PM14	89	421	562	1.82	5.1	A semiconducting surface layer with controlled resistivity can be developed after reduction of this group of glasses at elevated temperature. Currently used in electron multipliers requirements.
PM15	90	425	570	1.80	5.1
PM16	73	488	637	1.75	4.7
PM17	76	465	645	1.75	4.6
PM18	89	508	688	1.66	3.8
PM19	94	457	631	1.67	4
PM20	75	520	652	1.71	2.9
PM21	96	449	598	1.67	4

Miscellaneous Glasses

Other glasses that have unique applications have been grouped in this category. These glasses include neutron detective glasses and optical fiber core and clad glasses.Please call our customer service at (508) 347 5656 or email at bgraves@pegasusglassworks.com for further information.

Glass Type	CTE /^oC	T_g^oC	T_s^oC	n_D	r	Salient Features
PM22	77	505	623	1.65	4.4	Used for neutron detection.
PM23	92	492	669	1.51	2.5	Cladding for PM06.
PM24	92	508	646	1.74	4.6	High transmission core.
PM25	63	560	685	1.80	4.9	High index, Low expansion

CTE /^oC– Coefficient of thermal expansion

nD – Calculated Refractive Index @589.3 nm (sodium line D)

T_g– Glass transition temperature

r– Density in gm/cc

T_s– Littleton softening temperature

Pegasus Glassworks, Inc.

Manufacturer of Speciality and Custom Glass Products

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