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  1. Home
  2. Machine elements and parts
  3. CASTEM
Machine elements and parts
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CASTEM

EstablishmentFebruary 7, 1970
capital7996Ten thousand
number of employees335
addressHiroshima/Fukuyama-shi/1808-1 Mikuyacho Nakatsuhara
phone084-955-2221
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last updated:Nov 26, 2025
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  • Products/Services(68)
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CASTEM Company Profile

A lost-wax precision casting company with 55 years of experience. With technology that has been elevated by "one more step," we empower the people who create things.

With a posture of "just half a step" without complacency, we have cultivated "lost wax precision casting" over many years. Utilizing 3D printing technology, we offer next-generation precision casting technology called "Digital Cast." We obtained a U.S. patent for "MIM (Metal Injection Molding)" in 1991. We provide optimal proposals using various technologies and thoroughly support our customers' manufacturing! We specialize in complex three-dimensional shapes in small lots of various types and carry out everything from mold making to casting, machining, and simple assembly in an integrated in-house system. We supply products to various industries, including medical devices, semiconductors, machine tools, and aerospace. "Just make it, from one piece." We can propose a wide range of manufacturing methods from prototype production of one piece to mass production. We also enable time savings in searching for various suppliers and considering consultation destinations, becoming a true total cost reduction partner by proposing reductions in management costs related to consideration time and product costs. More than half a century ago, Castem began its casting business by handcrafting machine tools. Today, we have become a leading company in Japan for manufacturing general industrial components using lost wax casting and are also engaged in the production of micro lenses and micro needles using the world's highest precision 3D light shaping technology.

Business Activities

■Lost wax precision casting ■MIM (Metal Injection Molding) ■Digital fabrication (Metal 3D printed products, mold-less cast products) ■Resin printer (ultra-fine 3D modeling nanoscribe, color 3D printing) ■CT scan (non-destructive testing) services

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Products/Services (68)

Lightweight and cost reduction: Solving metal parts issues with lost-wax precision casting. product image
Lightweight and cost reduction: Solving metal parts issues with lost-wax precision casting.
Three advantages of metal 3D printing that accommodates complex shapes and special materials with short lead times! product image
Three advantages of metal 3D printing that accommodates complex shapes and special materials with short lead times!
Options for casting in trial production: Short delivery time of just one week without molds and cost reduction. product image
Options for casting in trial production: Short delivery time of just one week without molds and cost reduction.
Precision metal parts for food factory machinery, medical devices, and aerospace are also made with MIM! product image
Precision metal parts for food factory machinery, medical devices, and aerospace are also made with MIM!

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catalog(6)

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Try and do type

Try and do type

TECHNICAL
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Lost wax, MIM materials

Lost wax, MIM materials

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Technical Data (Detailed Information)

Technical Data (Detailed Information)

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Foundry's Crafting Recipe

Foundry's Crafting Recipe

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news(10)

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Notice of Year-End and New Year Holidays from Castem Co., Ltd.

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We would like to express our sincere gratitude for your continued patronage. We regret to inform you that we will be closed during the year-end and New Year holidays on the following schedule. ▶ Closed Period: December 27, 2025 (Saturday) to January 4, 2026 (Sunday) Inquiries received during the closed period will be addressed sequentially starting from January 5, 2026 (Monday). We apologize for any inconvenience this may cause and appreciate your understanding. Orders through various online shops will be accepted 24 hours a day via the internet. ───────────────────────────── Castem Co., Ltd. 1808-1 Nakatsuhara, Miyuki-cho, Fukuyama City, Hiroshima Prefecture 720-0004 TEL: 084-955-2221 (Main) FAX: 084-955-2065 https://www.castem.co.jp/ ─────────────────────────────

Dec 17, 2025

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Introducing mold-less casting in as little as one week by Castem Co., Ltd. Exhibiting at the "Monozukuri World Fukuoka Machine Element Technology Exhibition."

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Castem Co., Ltd. will exhibit at the "Monozukuri World Fukuoka - Mechanical Elements Technology Exhibition" held at Marine Messe Fukuoka from December 3 (Wednesday) to December 5 (Friday), 2025. Under the theme "Changing the Common Sense of Prototyping with Moldless Casting," we will introduce our moldless casting technology "Digital Cast," which offers the shortest delivery time of one week. Experience our new technology that combines precision lost-wax casting techniques developed since our founding with the latest 3D printing technology at our booth. Additionally, we will once again conduct our popular casting demonstrations! Visitors will receive a novelty made from metal that dissolves in hot water as a gift on the spot. We invite you to enjoy a unique "see, touch, and understand" manufacturing experience that only Castem can offer at our booth. 【Exhibition Overview】 Dates: December 3 (Wednesday) to December 5 (Friday), 2025, 10:00 AM to 5:00 PM Venue: Marine Messe Fukuoka (7-1 Okihamacho, Hakata Ward, Fukuoka City, Fukuoka Prefecture) Location: Hall A / Booth Number: 1-5 For more details, click here: https://prtimes.jp/main/html/rd/p/000000261.000035017.html

Nov 28, 2025

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Castem Co., Ltd. Pure Copper Heat Sink Wins First Place at the American Casting Contest.

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"Pure Copper Heat Sink," produced by Castem Technology Laboratories (CTL) based in California, USA, won the overall championship at the American Investment Casting Institute (ICI) casting contest and was featured in their journal. This product is a pure copper heat sink equipped with fine pins, measuring 52×28×13 mm and weighing 64 g. The array of fine pins has a diameter of 1 mm and a height of 4 mm, with a total of 752 pins arranged at a pitch of 1.15 mm. It is a crucial component of immersion cooling systems used in high-performance computing computers' GPUs (the heart of AI) in data centers necessary for AI. The fine shape is achieved through gypsum casting using sacrificial molds made by a resin 3D printer, followed by vacuum melting and pressure casting. Post-processing is limited to finishing a single integrated port, allowing for seamless assembly of parts with high dimensional accuracy within ±0.5 mm. Castem manufactures precision metal parts for various industrial sectors, including semiconductor and aerospace-related fields, using a variety of manufacturing methods. Please feel free to contact us through our website or other means.

Nov 26, 2025

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Detailed information

Company name CASTEM
number of employees335
Contact addresspostalcode 720-0004 Hiroshima/ Fukuyama-shi/ 1808-1 Mikuyacho NakatsuharaView on map TEL:084-955-2221 FAX:084-955-2065
Industry Machine elements and parts
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