904L执行ASTM A182/ASME SA-182标准提供质保书​
904L 概述:904L是一种含C量很低的高合金化的奥氏体不锈钢。该钢是为腐蚀条件苛刻的环境所设计的。最初该钢是为在稀硫酸中抗腐蚀而开发的。这一特性经多年的实际应用已被验证是很成功的。现在，904L在许多国家中已被标准化，并已被判定可用于制造压力容器。由于含有较高的Cr、Ni 、Mo、Cu等元素，具有良好的均匀腐蚀、抗点腐蚀、缝隙腐蚀、抗应力腐蚀、抗晶间腐蚀的能力。良好的可加工性和可焊性。

Summary of 904 l.

904L is a highly alloyed austenitic stainless steel with a low C content. The steel is designed for harsh conditions of corrosion. Initially the steel was developed for corrosion resistance in dilute sulphuric acid. This feature has been proven to be successful over the years. Now, 904L has been standardized in many countries and has been found to be used to create pressure vessels. Due to high Cr, Ni, Mo, Cu and other elements, it has good uniform corrosion, anti-corrosion, crevice corrosion, anti-stress corrosion and intergranular corrosion. Good machinability and weldability.

GB/T ASTM SWENEN EN chemical composition (typical value)

Gb 24511 American standard A240 U.S. standard A182 Sweden Europe C N Cr Ni Mo other

- 316Lmod - 724L 1.4435 0.03 0.1 17 13 2.2

- S31050 F310MoLN 725LN 1.4466 0.122522 2.1

S39042 N08904 F904L 904L 904L 1.4539 0.01 0.06 2025 4.5 1.5Cu

- S31254 F44 254SMO 1.4547 0.01 0.2018 6.1 Cu

Application performance:

Industrial equipment of chemical industry: distillation column of acetic acid, esterification reactor of acrylate, phosphoric acid mixer, zinc sulphate decomposition cabinet and agitator, pipeline, etc.

午虎现货Incoloy alloy25-6HN棒材提供质保书NAS 255NM

Product name: al-6xn/UNS N08367

International general terms: al-6xn, desulfurization denitration alloy, UNS N08367, Cronifer1925hMo, Incoloy alloy 25-6hn, NAS 255NM

National standards: ASTM B688, ASTM A240, ASTM B676, ASTM B675, ASTM B564

Main ingredients: carbon (C) 0.02 or less, manganese (Mn) of 2.00 or less, nickel (Ni) 23.5 ~ 25.5, silicon (Si) of 1.0 or less, phosphorus (P) of 0.04 or less, sulfur (S) of 0.01 or less, chromium (Cr) 20.0 ~ 22.0, copper (Cu) of 0.75 or less, molybdenum (Mo) 6.0 ~ 7.0, the nitrogen (N) 0.18 ~ 0.25

Physical properties: density: 8.24 g/cm3, melting point: 1320-1400 ℃, magnetic: no

Heat treatment: 1-2 hours between 980-1150 ℃ heat preservation, air cooling or water cooling rapidly.

Mechanical properties: tensile strength: sigma b is greater than 650Mpa, yield strength sigma b is greater than or equal to 295Mpa: elongation rate: delta is greater than 35%, hardness; HRB90

Material description:

Al - 6 xn (UNS N08367) is a kind of excellent resistance to pitting and crevice corrosion of chlorine ion capacity of super austenitic stainless steel. As a kind of good performance of corrosion resistance of alloy, its comprehensive corrosion resistant ability than 316 l had the very big spanning, at the same time relative to the C - 276 and other corrosion resistance of nickel base alloy close to its corrosion resistance ability, cost advantage is obvious. Because the visible part of nitrogen is added in the alloy, so that the Al - 6 xn material relative to conventional austenitic stainless steel (e.g., 304316317, etc.) have a higher tensile strength, and keep with excellent material toughness and impact strength. The allowable stress values specified in the ASME standard, Al - 6 xn 40% higher than 316 l, relative to the copper and nickel alloy high nearly doubled. Typical conditions: 60% sulfuric acid, under 80 ℃, the annual corrosion rate < 0.1 mm

Welding materials and welding process: 1.4529 alloy welding is recommended to use AWS A5.14 wire ernicrmo-3 or AWS A5.11 welding rod enicrmo-3, welding process and guide book to welcome the call request.  

Application:

Chemical container and pipe, Marine oil and gas platform device system, contact with water or oil condenser, heat exchangers and pipe system, pulp bleaching process of pressure filter, storage tank and pressure roller, thermal power plants, steel mills, petrochemical enterprises of flue gas desulfurization (FGD), crude distillation tower and fillers, desalting equipment and pumps, nuclear power plant servo water piping system of transformer tank shell, exposed to the Marine environment, pharmaceutical equipment (for drug purity), food production equipment.