RTJ material chart

The gasket hardness is carefully controlled and shall always be softer than the mating flanges to ensure a good seal and no damage to the flange surface (note: RTJ gaskets should not be re-used). All SMITH RTJ gaskets are manufactured from fully traceable materials and are stamped to the requirements of API 6A and ASME B16.20. DIN 50049 3.1 certification is supplied with all orders. The gaskets are machined to the required tolerances and surface finish using high quality CNC lathes. All soft iron and carbon steel RTJ gaskets are electroplated with zinc 0.0005" thick in accordance with API specifications. Other non-standard styles of metal rings are also available like combination, IX, Delta and Lens to customer specifications.

 

MATERIAL CROSS REFERANCE CHART

TRADE NAME RING ID ASTM DIN WERKSTOFF No. AISI/SAE UK OTHER Soft Iron D     1.1003 / 1.0335     Aramco / StW24 LCS S     1.1003 / 1.0335     Aramco / StW24 CS360 LT CS360LT A516 Gr70           4140 4140 UNS G41400 42CrMo4 1.7225 4140     F5 F5 UNS K42544 12CrMo195 1.7362     5Cr 1/2Mo SS304 S304 S30400 X5CrNi 18 9 1.4301 304 304S15   SS304L S304L S30403 X2CrNi 18 9 1.4306 304L 304SS12   SS309 S309 S30900 X15CrNiSi2012 1.4828 309 309S24   SS310 S310 S31008 XX15CrNiSi2520 1.4841 310 310S24   SS316 S316 S31600 X5CrNiMo18 10 1.4401 316 316S16   SS316L S316L S31603 X2CrNiMo18 10 1.4404 316L 316S11/316S12   SS316L UREA S316UG S31603 X2CrNiMo 18 14 3 1.4435       SS316Ti S316Ti S31635 X10CrNiMoTi1810 1.4571 316Ti 320S31/320S17   SS321 S321 S32100 X10CrNiTi18 9 1.4541 321 321S12   SS347 S347 S34700 X10CrNiNb 18 9 1.455 347 347S51   SS410 S410 S41000 X10Cr13 1.4006 410 410S21   Monel 400 Monel400 N04400 NiCu30Fe 2.436       Inconel 600 INC600 N06600 NiCr15Fe 2.4816       Inconel 625 INC625 N06625 NiCr22Mo9Nb 2.4856       Inconel 718 INC718 N07718           Incoloy 800 INC800 N08800 X5NiCrAlTi31-20 1.4958       Incoloy 800H INC800H N08810   1.4958       Incoloy 825 INC825 N08825 NiCr21Mo 2.4858       904L 904L N08904 X1NiCrMoCu25-20-5 1.4539       F51 F51 S31803 X2CrNiMoN22-5-3 1.4462     2205 /Duplex F53 F53 S32750 X2CrNiMoN25-7-4 1.441       F55 F55 S32760 X2CrNiMoCuWN 25 7 4 1.4501     Zeron 100 F60 F60 S32205         Duplex Titanium Ti R 50400   3.7035       17-4PH 17-4PH S17400   1.4542     630 S254 S254 S31254 X1CrNiMoCuN20-18-7 1.4547     F44 / 6Mo C276 C276 N10276 NiMo16Cr15W 2.4819     Hastelloy Alloy 28 Alloy28 N08028 X1 NiCrMoCuN 31 27 4 1.4563     SANICRO 28