Detail Information
Product Description

Detail Information
Usage:	For Industrial Machinery	Service Life:	Super Durable
Lifespa:	Long	Permeability (μ):	1-50,000 H/m
Soft Magnetic:	<10 KJ/m³	Hard Magnetic:	10-400 KJ/m³
Density:	6.0-7.4 G/cm³	Resistivity:	10-50 μΩ·cm
Highlight:	sintered magnetic metal materials , industrial machinery magnetic materials , cemented carbide tool with warranty

Product Description

SINT-D39 Standard for Sintered Magnetic Metal Materials in Industrial Manufacturing

1. Standard Overview

DIN 30910-4:2004 is a specialized standard published by the German Institute for Standardization (DIN) that specifies the technical delivery conditions for sintered magnetic metal materials. As Part 4 of the DIN 30910 series on sintered metals, it focuses on powder metallurgy-based magnetic materials, defining their chemical composition, physical properties, magnetic characteristics, mechanical performance, and delivery requirements. It applies to both soft magnetic and hard magnetic (permanent magnet) materials used in industrial manufacturing.

2. Material Classification & Composition

(1) Material Types

Category	Typical Materials	Primary Composition	Key Features
Soft Magnetic	Pure Fe, Fe-Si, Fe-Ni	Fe, Si (1-6%), Ni (30-80%)	High permeability, low coercivity, low losses
Hard Magnetic	AlNiCo, Sintered NdFeB, Ferrites	Fe, Co, Ni, Al, Nd, B	High coercivity, high remanence, permanent magnetism

(2) Key Chemical Requirements

Fe-Si (Silicon Steel): 1–6% Si to reduce eddy current losses and increase resistivity.
Fe-Ni (Permalloy): 30–80% Ni for extremely high initial permeability (μ > 50,000).
Fe-P (Phosphorus Iron): 0.3–0.8% P to enhance corrosion resistance and permeability.
Sintered NdFeB: Nd-Fe-B base, possibly with Co or Dy for improved temperature stability.

Impurity Control: Strict limits on sulfur (S), oxygen (O), etc., to prevent magnetic degradation.

3. Key Performance Metrics

(1) Magnetic Properties (Core Parameters)

Parameter	Soft Magnetic	Hard Magnetic	Test Standard
Permeability (μ)	500–50,000	1–10	IEC 60404-4
Coercivity (Hc)	<1 kA/m	10–1000 kA/m	IEC 60404-5
Remanence (Br)	0.5–1.5 T	0.8–1.4 T	IEC 60404-2
Max Energy Product (BHmax)	<10 kJ/m³	10–400 kJ/m³	IEC 60404-7
Hysteresis Loss	Low (AC applications)	High (permanent magnets)	IEC 60404-6

(2) Physical & Mechanical Properties

Property	Typical Range	Influencing Factors
Density	6.0–7.4 g/cm³	Sintering pressure/temp
Resistivity	10–50 μΩ·cm	Si/P content
Tensile Strength	100–300 MPa	Porosity/alloying
Hardness (HV)	50–150	Heat treatment

4. Industrial Applications

(1) Soft Magnetic Applications

Motor & Transformer Cores

Materials: Fe-Si, Fe-P
Advantages: Low eddy current loss, ideal for high-frequency motors and efficient transformers.

EMI Shielding

Materials: Fe-Ni (Permalloy)
Advantages: High permeability for electronic device interference suppression.

Sensors & Relays

Materials: Fe-Co (high saturation)
Advantages: Fast response for current sensing and magnetic switches.

(2) Hard Magnetic (Permanent Magnet) Applications

Permanent Magnet Motors (EVs, Drones)

Materials: Sintered NdFeB
Advantages: Ultra-high energy product (BHmax > 300 kJ/m³), compact size, high efficiency.

Speaker & Headphone Magnets

Materials: Ferrites, AlNiCo
Advantages: Cost-effective, stable performance.

High-Temperature Magnet Devices

Materials: SmCo (Samarium Cobalt)
Advantages: Heat resistance (>300°C), used in aerospace motors.

5. Material Selection Guide

Application Need	Recommended Material	Rationale
High-frequency, low loss	Fe-Si (3–6% Si)	High resistivity reduces eddy currents
Ultra-high permeability	Fe-Ni (Permalloy)	μ > 50,000
Strongest permanent magnet	Sintered NdFeB	BHmax > 300 kJ/m³
Corrosion resistance	Fe-P (Phosphorus Iron)	Phosphorus improves oxidation resistance
High-temperature stability	SmCo	Stable > 300°C

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Product Details:
Place of Origin:	China
Brand Name:	Sanxin
Certification:	ISO9001
Model Number:	SX-2381
Payment & Shipping Terms:
Minimum Order Quantity:	100
Price:	Negotiation
Payment Terms:	L/C,T/T
Supply Ability:	10000pcs/month

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