Senju Metal Industry

What Senju Metal Industry does

Senju Metal Industry Co., Ltd. (千住金属工業株式会社), founded in 1938 and headquartered in Tokyo's Adachi-ku, is a privately held Japanese specialty materials manufacturer with over 2,500 employees worldwide. The company produces soldering materials (solder alloys, solder paste, post-flux, flux-cored wire, solder preforms, solder balls, and semiconductor assembly fluxes), FA equipment (reflow furnaces including the SNR-GT series, flow/dip soldering machines, and the MILATERA system), sintering technology products (multi-layer and metal-based sliding bearings), and plating anodes. Its proprietary technology platforms include MILATERA low-temperature soldering enabling up to 35% CO2 reduction in customer manufacturing, TLP (melting-point-transformation) preform and paste materials, comprehensive PFAS-free formulations, and the DLN258-ZH area laser heating solder paste family.

The company operates a direct B2B enterprise sales model through a domestic network (Tokyo HQ, Chubu, Kyushu, and Soka operations offices) and international subsidiaries including Taiwan Senju Semiconductor, Shanghai Senju Metal, Senju Material Korea, and Senju Corporation (US). Revenue is generated primarily through hardware sales of materials and equipment under quote-based, multi-year enterprise contracts following 12-24 month OEM qualification cycles. Primary customer segments are Semiconductor/Electronics Manufacturing and Automotive Electronics (both flagged as primary verticals), with Mobile/Consumer Electronics and General Electronics as secondary. Notable customers include Intel, Amkor Technology, ASE Group, TDK, Panasonic, ROHM, Toyota Auto Works, and Lenovo Japan, with recurring supplier quality awards (Intel SCQI 2017-2021, Intel EPIC 2022-2025, Amkor Supplier Excellence 2025) signaling durable enterprise relationships. Quality and compliance positioning is anchored by IATF 16949 automotive certification (2018), RBA VAP Gold status (2022, 2024), and conflict-mineral-free initiatives aligned with RBA and JEITA standards.

Name

Senju Metal Industry

Legal name

Senju Metal Industry Co., Ltd.

Website

https://senju.com

Company type

Private

Founded year

1938

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Senju Metal Industry is a privately held Japanese specialty materials manufacturer, founded in 1938, producing soldering materials, reflow and dip soldering equipment, and sintering technology products for semiconductor packaging, automotive electronics, and consumer electronics manufacturers globally.

Ownership category

akta.pro rank

Product category

Electronic Soldering Materials and Assembly Equipment

NAICS

Semiconductor and Other Electronic Component Manufacturing (33441), Welding and Soldering Equipment Manufacturing (333992)

SIC

Wholesale-Electronic Parts & Equipment, Nec (5065)

akta.pro primary industry

Packaging Materials & Chemicals (Underfill/Mold Compound/Die Attach/Solders) (HDAHAGAM)

akta.pro secondary industry

Back-End/Advanced Packaging Equipment (Die Attach/Wire Bond/Flip-Chip/TCB) (HDAHAEAL)

Keywords

• Lead-free solder materials
• Electronics soldering equipment
• Semi-conductor packaging materials
• Automotive soldering solutions
• Sintered sliding bearings

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices6 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Soldering Materials: Sale of solder alloys, solder paste, post-flux, flux-cored wire, solder preforms, solder balls, and semiconductor assembly flux. Revenue is generated through direct B2B sales to electronics manufacturers, with long qualification cycles of 12-24 months at major OEMs.
2. FA Equipment (Manufacturing Equipment): Sale of reflow ovens (e.g., SNR-GTⅡ series), dip soldering machines, and the Milatera equipment system. Equipment sales complemented by ongoing service and support.
3. Sintering Technology Products: Multi-layer and metal-based sliding bearings (焼結技術・製品) sold to industrial manufacturers.
4. Plating Anodes: Special metal products including plating anodes for electroplating applications.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Senju Metal Industry manufactures and sells soldering materials (solder alloys, solder paste, post-flux, flux-cored wire, solder preforms, solder balls, and semiconductor assembly fluxes) and factory automation equipment (reflow ovens and dip/flow soldering machines) used by electronics, semiconductor, and automotive manufacturers. It also produces sintered sliding bearings and plating anodes for industrial customers, with proprietary low-temperature soldering (MILATERA) and TLP joining technologies serving high-density packaging and lead-free compliance needs.

Differentiator

Problem solved

Functional benefit

Products and services

• Solder Alloys (はんだ合金)

Quantifiable outcome

• 35% CO2 reduction achieved using low-temperature solder (LTS) technology in customer manufacturing (Lenovo Japan case)
• +1 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

One partnership is on record.

• Lenovo JapancoreStrategic or Co-development Partner · 22 December 2021Senju Metal Industry partnered with Lenovo Japan on low-temperature soldering technology (LTS/MILATERA) adoption in Lenovo's manufacturing process. This partnership was featured in Lenovo Japan's '#HiddenESG' campaign, demonstrating a 35% CO2 reduction achieved through LTS technology use in Lenovo products. The collaboration represents a co-marketing relationship showcasing environmental credentials.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Indium Corporation: US-based global solder materials specialist producing solder paste, preforms, alloys, and fluxes for semiconductor and electronics assembly. Closely comparable in product breadth and tier-1 customer engagement.
• Tamura Corporation: Japanese manufacturer of solder paste, flux, soldering equipment, and electronic materials with overlapping product categories (FA equipment plus soldering materials). Closely comparable business mix to Senju's materials-plus-equipment model.
• Alpha Assembly Solutions (MacDermid Alpha Electronics Solutions): Global supplier of solder paste, alloys, and fluxes serving semiconductor packaging and electronics assembly. Direct competitor in lead-free and high-reliability solder materials across Senju's customer segments.
• Harima Chemicals Group, Inc. Japanese specialty chemicals and solder materials producer with overlapping soldering materials and electronic chemicals lines. Comparable in vertical integration and customer base across Japanese electronics manufacturers.
• Koki Company Ltd. Japanese solder materials specialist serving semiconductor packaging and electronics assembly. Direct competitor in solder paste and flux categories with similar tier-1 OEM customer profile.
• Nihon Superior Co., Ltd. Japan-based direct competitor in lead-free solder alloys, pastes, and fluxes, with comparable end-markets in electronics and semiconductor packaging. Highly comparable in product portfolio and Japanese manufacturing footprint.

Emerging players

• AIM Solder: Smaller global solder materials manufacturer offering solder paste, alloys, and fluxes for electronics assembly. Comparable in product mix but smaller in scale and customer footprint than Senju's tier-1 OEM relationships.

Broad incumbents

• Heraeus Electronics: German-based global supplier of solder materials, bonding wires, and thick-film pastes for semiconductor and power electronics. Comparable product range in soldering materials with a broader materials portfolio.
• Henkel AG & Co. KGaA (Loctite / Henkel Electronics): Global materials giant with a broad electronics materials portfolio including solder materials, underfills, and conductive adhesives. Overlaps with Senju in solder and assembly materials but operates at significantly larger scale and across many adjacencies.

Regional players

• Shenmao Technology Inc. Taiwan-based solder paste and soldering materials supplier serving semiconductor packaging and electronics assembly in Asia. Comparable product portfolio with primary regional overlap in Taiwan and Greater China.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/smic_senju
• LinkedInlinkedin.com/company/senju-metal-industry-co-ltd-

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Senju Metal Industry