Core Points - The Ministry of Commerce has approved and published 33 industry standards, including the "Retail Store Inventory Management Specification" and "Key Performance Indicators (KPI) System for Chain Supermarkets" [1][2][3] Group 1: Industry Standards Overview - The newly published standards will be effective from January 1, 2026, and include various guidelines for retail and trade sectors [2][3] - Key standards include: - SB/T 10805-2025: Retail Store Inventory Management Specification [2] - SB/T 10669-2025: KPI System for Chain Supermarkets [2] - SB/T 10807-2025: Requirements for Retail Store Managers [2] - SB/T 10620-2025: Retail Category Management Guidelines [2] - SB/T 10599-2025: Technical Specifications for Shopping Center Construction and Management [2] Group 2: Environmental and Digital Standards - New standards also focus on sustainability and digitalization, such as: - SB/T 11252-2025: ESG Management System Requirements for Accommodation Enterprises [3] - SB/T 11253-2025: Digital Operations and Service Standards for Hotels [3] - SB/T 11259-2025: Digital Supply Chain Management Consulting Service Guidelines [3] - SB/T 11262-2025: Green Recycling Standards for Recycled Resources [3] Group 3: International Trade Standards - The standards include guidelines for international trade, such as: - WM/T 11-2025: Guidelines for Sustainable Infrastructure Projects by Chinese Enterprises Overseas [3] - WM/T 19-2025: Low Carbon Evaluation Requirements for Photovoltaic Component Exports [3]

Core Viewpoint - 4J50 is a high-performance nickel-based precision alloy known for its excellent heat resistance, corrosion resistance, and mechanical properties, making it widely used in aerospace, energy equipment, and high-end manufacturing [1] Group 1: Mechanical Properties - The chemical composition of 4J50 primarily consists of nickel, with aluminum, iron, and titanium, providing good thermal stability and creep resistance [3] - Key mechanical performance parameters include: - Ultimate Tensile Strength (UTS): ≥1000 MPa (room temperature) - Yield Strength (YS): ≥850 MPa - Elongation (EL): ≥15% - Fracture Toughness (KIC): ≥120 MPa·m^(1/2) - Coefficient of Thermal Expansion: approximately 11.5×10^-6 /°C (0-650°C) - Corrosion resistance: Excellent performance in high-temperature and oxidative environments [4] Group 2: Industry Standards - The production and inspection of 4J50 alloy must adhere to strict industry standards, including: - ASTM B557M: Specifies tensile testing methods for metallic materials, applicable for testing UTS and elongation of 4J50 alloy - AMS 2224: Details the heat treatment processes for 4J50 alloy, ensuring consistent performance across different temperatures [4] Group 3: Material Selection Misconceptions - Common errors in material selection include: - Confusing alloy grades: 4J50 and similar grades like 4J32 have differences in composition and performance, necessitating clarity on application scenarios and performance requirements - Ignoring heat treatment effects: The mechanical properties of 4J50 are highly dependent on heat treatment; materials not properly treated may not meet performance standards - Not considering the usage environment: While 4J50 is suitable for high-temperature and high-load environments, it may not be the best choice in low-temperature or less corrosive environments [4][5] Group 4: Market Trends and Pricing - The cost of 4J50 alloy is significantly influenced by nickel price fluctuations, with the average LME nickel price in 2023 being approximately $25,000 per ton, while the market price for 4J50 precision alloy is around 150-180 RMB per kilogram, showing a stable growth trend [5] - The exceptional mechanical properties and broad application scenarios of 4J50 precision alloy make it an important material in high-performance engineering fields, with future prospects expected to expand due to technological advancements and changing market demands [5]