basic introduction

ZRLK testing stainless steel testing and analysis services, for all kinds of stainless steel products, can carry out brand identification, performance testing, composition analysis services, and provide CMA/CNAS qualification testing reports.

Testing service

Stainless steel testing

Martensitic steel, ferritic steel, austenitic steel, austenitic-ferrite (dual phase) stainless steel and precipitation hardening stainless steel, chromium stainless steel, chromium nickel stainless steel and chromium manganese nitrogen stainless steel.

Stainless steel composition analysis

Iron (Fe), chromium (Cr), carbon (C), nickel (Ni), molybdenum (Mo), niobium, titanium (Nb, Ti), nitrogen (N), phosphorus, sulfur (P, S), etc.

Stainless steel product testing

Stainless steel plates, stainless steel containers, stainless steel rods, stainless steel pipes, stainless steel kitchen utensils, food grade stainless steel, stainless steel cabinets, stainless steel pipe building materials, etc.

Stainless steel grade identification

316 stainless steel, 302 stainless steel, 304 stainless steel, 304L stainless steel, 316L stainless steel, 431 stainless steel, 304F stainless steel, 321 stainless steel, 310 stainless steel, austenitic stainless steel, ferritic stainless steel, martensitic stainless steel, etc.

Stainless steel product testing

Stainless steel furniture, stainless steel engineering, stainless steel racks, stainless steel screens, stainless steel showcases, stainless steel wine racks, etc.

Test items

Physical properties: magnetic properties, electrical properties, thermal properties, oxidation resistance, wear resistance, salt spray, corrosion, density, thermal expansion coefficient, elastic modulus, hardness;

Chemical properties: atmospheric corrosion, intergranular corrosion, stress corrosion, pitting corrosion, corrosion fatigue, corrosion in artificial atmosphere;

Mechanical properties: tensile, bending, yield, fatigue, torsion, stress, stress relaxation, impact, wear, hardness, hydraulic resistance, tensile creep, flaring, flattening, compression, shear strength, etc.;

Process performance: filament stretching, fracture inspection, repeated bending, bidirectional torsion, hydraulic test, flaring, bending, hemming, flattening, ring expansion, ring stretching, microstructure, metallographic analysis;

Non-destructive testing: X-ray non-destructive testing, electromagnetic ultrasonic, ultrasonic, eddy current testing, magnetic flux testing, penetration testing, magnetic particle testing failure analysis;

Fracture analysis, corrosion analysis, etc.;

Metallographic examination: macro metallographic and micro metallographic.

Testing standards

GB/T 13305 Metallographic determination of α-phase area content in stainless steel

GB/T 13671 electrochemical test method for crevice corrosion of stainless steel

GB/T 14975 stainless steel seamless steel pipe for structure

GB/T 14976 Stainless steel seamless steel pipe for fluid transportation

GB/T 17899 Stainless steel pitting potential measurement method

GB/T 18615 Non-alloy steel and stainless steel joints for corrugated metal hoses

GB/T 18704 stainless steel composite pipe for structure

GB/T 19228.1 Stainless steel clamped pipe fittings part 1: clamped pipe fittings

GB/T 19228.2 Stainless steel clamping type pipe fittings part 2: Thin wall stainless steel pipe for connection

GB/T 19228.3 Stainless steel clamping fittings Part 3: O-shaped rubber sealing ring

GB/T 1954 chromium-nickel austenitic stainless steel weld ferrite content measurement method

GB/T 20016 Metal and other inorganic coatings Stainless steel parts smoothing and passivation electro-polishing method

GB/T 20878 Stainless steel and heat-resistant steel grades and chemical composition

Our advantage

1. With a professional qualification and experienced expert technical team, we can provide you with professional consultation and services.

2. Have advanced laboratory equipment to ensure the accuracy and reliability of test data.

3. As a third-party testing and certification organization trusted by customers worldwide, we are your certificate of quality.