Soft Magnetic Pure Iron ASTM-A848 Standard Specification

Soft Magnetic Pure Iron ASTM-A848 Standard Specification

STM-A848 is an iron material with excellent plasticity and toughness, widely used in the manufacture of various parts and structural components that require resistance to tensile and shear forces. During the processing and welding process, attention should be paid to avoiding overheating and overburning, and selecting appropriate processing methods and welding parameters.
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Description
Technical Parameters

Redefining Industrial Performance with Ultra-Refined Iron

Xinye Taiming delivers metallurgically advanced pure iron billets designed for applications where standard materials fail. Our proprietary production protocols achieve impurity levels 35% below industry averages, making these billets the preferred choice for:

High-efficiency power transformers (15-400kV range)

Precision medical imaging equipment components

Aerospace-grade electromagnetic actuators

Ultra-low loss motor cores


Breakthrough Material Characteristics

1. Electromagnetic Excellence

DC Magnetic Permeability: 4,500-5,500 μH/m (vs. 3,800 μH/m in commercial grades)

Core Loss Optimization: <2.3 W/kg @ 1.5T/50Hz through controlled grain orientation

Hysteresis Suppression: Coercive force reduced to 72 A/m via stress-relief annealing

2. Structural Integrity

Fatigue Resistance: 1×10⁷ cycles @ 180MPa stress (per ASTM E466)

Thermal Stability: ≤0.008% dimensional change from -40°C to +250°C

3. Surface Perfection

Mirror-finish option with Ra 0.4μm for vacuum chamber applications

Anti-oxidation coating available (3-8μm Al₂O₃ layer)


Proprietary Manufacturing Workflow

Phase 1: Hyperclean Material Preparation

Raw Iron Sourcing: Direct partnerships with Q235-certified mines (S≤0.003%, P≤0.004%)

Charge Calculation: AI-driven impurity compensation system adjusts for batch variations

Phase 2: Vacuum Refining Process

Triple-melt sequence (VIM + ESR + VAR) reduces non-metallic inclusions to Class 0.5 per ASTM E45

Real-time oxygen monitoring maintains <15ppm dissolved gases

Phase 3: Microstructure Engineering

Directional solidification creates columnar grains (aspect ratio 8:1)

Multi-stage normalizing: 920°C → 780°C → 650°C with controlled cooling rates

Phase 4: Final Processing

Isothermal forging at 30% below recrystallization temperature

Cryogenic treatment (-196°C/24h) enhances dislocation density


Technical Mastery in Numbers

Property Xinye Taiming Industry Average Test Method
Carbon Content 0.002% max 0.015% ASTM E1019
Sulfur 0.0018% 0.008% ISO 15349
Grain Size ASTM 7.5 ASTM 5 ASTM E112
Residual Stress <12 MPa 35-50 MPa XRD Analysis
Magnetic Flux Density 2.18T @ 2500A/m 2.03T IEC 60404-8

Competitive Differentiation

1. Traceability Assurance

Blockchain-tracked material history from smelting to shipment

25-year archival storage of metallurgical records

2. Application-Specific Engineering

Custom magnetic aging treatments (50-200°C/2-48h)

Laser surface texturing for adhesive bonding (Ra 2.5-10μm adjustable)

3. Sustainability Leadership

Closed-loop water recycling (93% reuse rate)

Scrap metal recovery program with 100% material traceability


Implementation Case Studies

Case A: High-Frequency Transformer Cores

Client requirement: Reduce eddy current loss by 40% at 20kHz

Our solution: Implemented 0.23mm thin-strip rolling with transverse magnetic field annealing

Outcome: Achieved 17.5W/kg loss vs. 29W/kg in previous supplier

Case B: MRI Shielding Components

Challenge: Eliminate magnetic artifacts in 7T scanners

Innovation: Developed ultra-homogenous billet structure (σ<0.5% property variance)

Result: Enabled 0.05mm imaging resolution compliance


Certifications & Compliance

IATF 16949:2016 Automotive Quality Management

RoHS 3 (EU 2015/863) & REACH SVHC Compliance

MIL-I-17214E Military Specification


Technical Support Ecosystem

Free metallurgical consultation (>10kg orders)

On-site failure analysis with SEM/EDS reporting

DFMA (Design for Manufacturing) optimization services

 

 

 

 

 

Help FAQ
Common Problem
  • Are you trading company or manufacturer ?

    We are manufacturer and trading company in Shanxi, China .

  • How long is your delivery time?

    Generally it is 3-5 days if the goods are in stock. or it is 5-15 days if the goods are not in stock, it is according to quantity.

  • Do you provide samples ? is it free or extra ?

    Yes, we could offer the sample for free charge but do not pay the cost of freight.

 

 

 

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Package

 

Pure iron is typically packaged with rust-preventive oil, wrapped in plastic film, and secured with plastic or metal straps. It is then placed on wooden pallets or in wooden crates, sometimes using moisture-proof paper or vacuum packaging for extra protection during transportation and storage.

 

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Transportation

 

At Taiyuan Xinye Taiming Manufacturing and Processing Co., Ltd., we efficiently deliver products worldwide, handle shipping and customs clearance, and ensure fast, safe, and hassle-free transportation to all parts of the world.

 

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Partner

 

We are proud to have established strong, trusted partnerships with leading steel companies. These alliances have enabled us to enhance our operations, ensure the delivery of top-quality products, and maintain our industry leadership, driving excellence and innovation.

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