What forms is the alloy supplied in?

The alloy is supplied in various forms including Wire (D= 0.1~8mm), Strip (W= 5~250mm, T= 0.1mm), Foil (W= 10~100mm, T= 0.01~0.1mm), and Bar (Dia= 8~100mm, L= 50~1000mm).

53501000mm Kovar Alloy 4j29 Plate in Stocking

Name: 5*350*1000mm Kovar Alloy 4j29 Plate in Stocking
Brand: Hangzhou Ualloy Material Co., Ltd.
SKU: 1903749492

Zhejiang, ChinaHangzhou Ualloy Material Co., Ltd.

5*350*1000mm Kovar Alloy 4j29 Plate in Stocking

US$39.00

5-99 kg

US$33.00

100-999 kg

US$31.00

1,000+ kg

Product profile

Customization

Available

Product Type

Sheet

Material

Ni Co Fe

Model NO.

4j29

Condition

Bright, Annealed

Color

Bright

Size

1.2mm,1.6mm,2.0mm,3.17mm,4.76mm

Packing

Wooden Case

Transport Package

Wooden Case

Specification

Customized

Trademark

Ualloy

Origin

China

Production Capacity

500 Tons/Year

Key features

Glass-to-Metal Seal: Compatible with borosilicate glass thermal expansion for reliable seals in vacuum systems.

Customizable Sizes: Available in multiple thicknesses including 1.2mm, 1.6mm, 2.0mm, 3.17mm, and 4.76mm.

OEM/ODM Service: Supports OEM and ODM services with dedicated R&D engineers for custom solutions.

Wide Application: Ideal for vacuum tubes, X-ray tubes, lightbulbs, and electronic component sealing.

Fast Lead Time: Average lead time within 15 working days for both peak and off-peak seasons.

Flexible Payment: Accepts LC, T/T, D/P, PayPal, Western Union, and small-amount payments.

Multiple Forms: Supplied as Wire, Strip, Foil, and Bar with various dimensions to meet needs.

Company profile

Hangzhou Ualloy Material Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2012-10-01 CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤24h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryHangzhou Ualloy Material Co., Ltd. is a China-based manufacturing factory established in 2012, focused on resistance alloys, copper-nickel alloy strips, FeCrAl alloys, and precision alloys. It operates from a 2,195 m² plant with two production lines, a complete stated process from melting through slitting, and testing equipment. The supplier reports ISO9001:2015 certification, self-operated import and export rights, and exports accounting for 51%–70% of sales. Its stated workforce includes 15 employees, one R&D engineer, and fewer than five quality-control staff. The available trade records show three single-transaction buyer cases in Brazil during April–May 2025. Evidence supports established manufacturing and export operations, but after-sales service, financial credibility, customization execution, and broader customer performance cannot be fully assessed from the provided information.

Supplier typeThe supplier is explicitly identified as a factory/manufacturer and a limited company located in Fuyang, Hangzhou, China. Its 2,195 m² manufacturing plant and stated alloy-strip production specialization support classification as a manufacturing supplier rather than only a trading intermediary.

CertificationsThe supplier reports holding an ISO9001:2015 management-system certificate. This is explicit evidence of quality-management certification, although the provided information does not include certificate scope, issuing body, or validity dates.

Production capacityThe supplier reports a 2,195 m² manufacturing plant, two production lines, and a full process covering melting, surface cleaning, rolling, and slitting, supported by testing machines. These details explicitly demonstrate in-house manufacturing infrastructure for alloy-strip products.

Client casesTrade records identify three Brazilian buyer companies and product descriptions involving nickel bars, Ni80Cr20 heating material, and steel-related goods, with one transaction recorded for each case during April–May 2025. These records provide evidence of named overseas customer transactions, but the limited number of transactions does not establish long-term relationships, repeat orders, or customer satisfaction.

Product Q&A

Q:What is the primary application of Kovar Alloy 4J29?

It is primarily used for reliable glass-to-metal seals in electronic devices like vacuum tubes, X-ray tubes, lightbulbs, and vacuum systems in scientific research.

Q:What sizes are available for the 4J29 plate?

Custom sizes are available, including thicknesses of 1.2mm, 1.6mm, 2.0mm, 3.17mm, and 4.76mm.

Q:Does the supplier offer OEM or ODM services?

Yes, the supplier supports both OEM and ODM services and has 1 R&D engineer to assist with custom requirements.

Q:What is the typical lead time for orders?

The average lead time is within 15 working days for both peak season and off-season.

Q:What payment methods are accepted?

Accepted payment terms include LC, T/T, D/P, PayPal, Western Union, and small-amount payments.