D.DOT INDUSTRIES INSTRUMENTS MATERIAL SPECIFICATIONS

Introduction

This document provides an overview of the materials used by D.DOT INDUSTRIES for manufacturing various surgical, dental, and medical instruments.

Definition: High-Grade Steel

The term “High-Grade Steel” is used by manufacturers to indicate steel quality. It ensures that unwanted alloy components like phosphorus and sulfur remain within permissible limits.

Sources of Supply

D.DOT INDUSTRIES sources all materials for its high-quality products, such as forgings for scissors and forceps, from reputable suppliers. While we do not directly influence the production of these materials, we ensure consistent product quality through careful supplier selection.

Material Specifications

High-Grade Stainless Steel

1.4117

Used for: Scissors, Bone Rongeurs, Bone Cutting Forceps, Scalpels, Knives, Curettes, Orthodontic Pliers, Dental Drills. Shortcut: X 38 CrMoV 15 (DIN 17442) Characteristics: Martensitic, Magnetic, Hardness 50-58 HRC

1.4021

Used for: Scissors with TC Inlets, Forceps, Chisels, Dental Pliers, Extractors, Drills. Shortcut: X 20 Cr 13 (DIN 17440-17442) Type/Grade: AISI 420 Characteristics: Martensitic, Magnetic, Hardness 40-47 HRC

1.4034

Used for: Scissors, Rongeurs, Bone Cutting Forceps, Dental Probes, Medullary Reamers. Shortcut: X 40 Cr 13 (DIN 17441) Characteristics: Martensitic, Magnetic, Hardness 55 HRC

1.4305

Used for: Probes, Handles, Screws, Nuts, Components with Low Demand. Shortcut: X 12 CrNiS 18 9 (DIN 17440) Type/Grade: AISI 303 Characteristics: Austenitic, Non-Magnetic, Not for Hardening

1.4301

Used for: Suction Tubes, Specula, Retractors, Flexible Probes. Shortcut: X 12 CrNiS 18 8 (DIN 17440) Type/Grade: AISI 304/304H Characteristics: Austenitic, Non-Magnetic, Malleable

1.4310

Used for: Springs. Shortcut: X 12 CrNi 17 7 (DIN 17440) Type/Grade: AISI 301 Characteristics: Spring Steel, Austenitic, Non-Magnetic

1.4401

Used for: Measuring Gauges for Drills and Nails. Shortcut: X 5 CrNiMo 18 10 (DIN 17440) Type/Grade: 316 Characteristics: Austenitic, Non-Magnetic

1.4441

Used for: Implants, Prosthesis. Shortcut: X 2 Cr Ni Mo 18 15 3 (DIN 17443) Type/Grade: AISI 316 LVM Characteristics: Implant Steel

Non-Metallic Materials

Iron-Based Alloys

  • Brass (CuZn40Pb2): Used for instruments with low demands, usually chrome-plated.
  • Bronze (CuSn8): Used for slide bearings.
  • Aluminum (AlMg1): Used for containers and handles.
  • Copper (Cu): Used for malleable instruments, electric components, silver/chrome/nickel-plated.
  • Titanium (Ti): Used for implants, clips, forceps; lightweight, robust, and expensive.
  • New Silver: Used for malleable probes.

Precious Metals

  • Silver (Ag): Used for malleable copper instruments as plating.
  • Gold (Au): Used for marking instruments with TC inlets.

Non-Metal Materials (Plastics)

  • Ferro Zell (HGW 2082): Used for handles and hammers.
  • Delrin (POM): Used for handles, electric-insulated components.
  • Teflon (PTFE): Used for bearings, electric-insulated components.

Natural Materials

  • Wood: Used for handles and cases but is being replaced by synthetic materials.
  • Leather: Used for cases and pouches.

Concluding Remarks

This document provides a general overview of the materials used for surgical instruments. The actual number of materials and alloys used in the manufacturing process is extensive and subject to change based on advancements and manufacturing improvements.

References & Standards

  • Steel Key (Wegst-Verlag)
  • Table-Book Metal (Europa Lehrmittel)
  • Steel Standardization in Fachkundebuch Metal (Europa Lehrmittel)
  • DIN 17442: Forged Products for Surgical Instruments
  • DIN 58298: Materials, Construction, and Testing of Surgical Instruments