Ningbo Runfine Machinery Co., Ltd.  

Product Name: 304 316L 321 etc Stainless Steel Strip for Razor Blade Model NO.: sst Surface Treatment: Polished Technique: Cold Rolled Shape: Foil Certification: ISO, ASTM, GB, DIN, JIS Grade: 400 Series Standard: ASTM, AISI, GB, JIS, DIN Type: Stainless Steel Strips Trademark: JIALE Transport Package: Standard Export Package Specification: kg Origin: Zhejiang China HS Code: 72191100 Product Description AISI 442 stainless steel is a ferritic stainless steel formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. 442 is the AISI designation for this material. S44200 is the UNS number. Additionally, the British Standard (BS) designation is 442S15..Stainless steel type 436 is a variation of Type 434 to which Columbium has been added to minimize "roping" or "ridging" during stretch forming operations.AISI 436 stainless steel is a ferritic stainless steel formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. 436 is the AISI designation for this material. S43600 is the UNS number.CHEMISTRY TYPICALCarbon: 0.12 maxManganese: 1.00 maxSilicon: 1.00 maxChromium: 16.00-18.00Nickel: 0.50 maxMolybdenum: 0.75-1.25Phosphorus: 0.040 maxSulfur: 0.030 maxCobumbium + Tantalum: 5xC min-0.70 maxIron: BalancePHYSICAL PROPERTIESDensity: 0.28 lbs/in3 7.74 g/cm3Electrical Resistivity: microhm-in (microhm-cm): 68 ° F (20 °C): 23.68 (60)Specific Heat: BTU/lbl° F (kJ/kg•K): 32 - 212 ° F (0 - 100 °C): 0.11 (0.46)Thermal Conductivity: BTU/hr/ft2/ft/° F (W/m•K) At 212 ° F (100 °C): 15.1 (26.1) At 932 ° F (500 °C): 15.2 (26.3) Mean Coefficient of Thermal Expansion: in/in/° F (µm/m•K): 32 -212 ° F (0 - 100 °C): 5.2 x 10·6 (9.3) 32-1000 ° F (0- 538 °C): 6.3 x 10·6 (11.4) Modulus of Elasticity: ksi (MPa) 29 x 103 (200 x 103) in tensionMagnetic Permeability: Magnetic Melting Range: 2600 - 2750 ° F (1427 - 1510 °C)FINISHES1 -Hot rolled annealed and descaled. It is available in strip, foil and ribbon. It is used for applications where a smooth decorative finish is not required.2D -Dull finish produced by cold rolling, annealing and descaling. Used for deep drawn parts and those parts that need to retain lubricants in the forming process.2B -Smooth finish produced by cold rolling, annealing and descaling. A light cold rolling pass is added after anneal with polished rolls giving it a brighter finish than 2D.BA-Bright annealed cold rolled and bright annealedCBA-Course bright annealed cold rolled matte finish and bright anneal 2 -Cold Rolled2BA-Smooth finish produced by cold rolling and bright annealing. A light pass using highly polished rolls produces a glossy finish. A 2BA finish may be used for lightly formed applications where a glossy finish is desired in the formed part. Polished -Various grit finish for specific polish finished requirements.