As a Senior Technical Foreign Trade Merchandiser and Materials Engineering Consultant at Alloword Trading (Shanghai) Co., Ltd., I am pleased to present our high-performance 75Cr1 cold-rolled alloy steel strip. Designed for the most demanding engineering and manufacturing applications, this product exemplifies our commitment to absolute technical superiority, precision, and commercial excellence.
Ⅰ.International Designation & Chemical Composition Mandate (The MTC & Composition Rule)
To ensure seamless global engineering integration and eliminate ambiguity, we strictly adhere to international standards and transparent metallurgical tracking:
1. International Cross-Reference:
●Chinese Standard (GB): 75Cr1 (per DIN EN / specialized equivalents)
●German / European Standard (EN): DIN 1.2210 / EN X3CrSiMo5-1 or equivalent spring/tool steel classifications
●Unified Numbering System (UNS): Equivalent high-carbon alloy tool steel equivalents matching international saw-blade and high-stress specifications.
2. Guaranteed Chemical Composition Ranges:
Carbon (C): 0.70 – 0.80% — Optimized for exceptional hardenability and wear resistance.
Silicon (Si): 0.15 – 0.35%
Manganese (Mn): 0.60 – 0.80%
Chromium (Cr): 0.30 – 0.40% — Enhances depth of hardening, tensile strength, and structural integrity.
Phosphorus (P):≤0.030% (Strictly controlled to prevent cold-brittleness)
Sulfur (S): ≤0.030%(Minimized to eliminate non-metallic inclusions)
3.Mill Test Certificate (MTC) Assurance:
Every shipment is accompanied by an original Mill Test Certificate (MTC) originating from top-tier mills (fully compliant with Baosteel/Shagang quality hierarchies), rigorously validated by third-party testing such as SGS or TÜV to guarantee chemical and mechanical compliance.
Ⅱ. Core Mechanical & Metallurgical Properties
Designed for applications requiring high fatigue resistance, superior elasticity, and exceptional wear endurance:
Delivery Condition / Microstructure: Spheroidized annealed (achieving a spheroidization rate ≥90%), ensuring optimal formability prior to final heat treatment.
Tensile Strength (Rm): Min. 580 MPa up to 720 MPa (depending on cold-worked temper states).
Yield Strength (Rp0.2): Tailored for high-load spring and cutting applications.Hardness Control: Max. 225 HV in the soft-annealed state, providing excellent blanking and stamping behavior before secondary hardening.
Ⅲ. Advanced Manufacturing & Precision Equipment Infrastructure
At Alloword, our structural engineering capabilities are backed by world-class machinery to meet stringent international tolerances:
●Thickness & Width Precision: Processed via our advanced 20-high Sendzimir mills equipped with AGC (Automatic Gauge Control) systems and ABB control architecture, achieving thickness tolerances down to ±0.002mm to ± 0.01mm.
●Edge Conditioning & Slitting: High-precision slitting lines equipped with hydraulic lock nuts ensure zero burrs, excellent straightness, and tight width tolerances.
●Bright Annealing & Decarburization Control: Processed in advanced hydrogen/protective atmosphere annealing lines, maintaining intergranular oxidation and surface decarburization to ≤5μmm.
●Packaging for Export: Secured with export-grade moisture-proof barriers, anti-corrosion VCI film, and robust wooden palletization designed to withstand harsh sea freight environments.
Ⅳ. Primary Applications
Precision Cutting Tools: Industrial woodworking saws, band saw blades, and hand saws.
Automotive & Industrial Springs: High-stress flat springs, clutch components, and retaining rings.
Mechanical Components: Wear-resistant washers, doctor blades, and textile machinery components.
Baoshan District,
Shanghai, China.
