What Are Stainless Steel Fasteners，What Are Stainless Steel Fasteners Grade？
Stainless steel is one of material of fastener ，due to it’s corrosion and heat resistance, stainless steel (SS) is one of the most commonly used and important materials for fasteners. Today, we’ll introduce SS fasteners information.
Stainless steel fasteners are made from a steel alloy that contains a minimum of 10.5% of Chromium and is also referred to as Inox steel. There are over 150 different grades and surface finishes of stainless steel fasteners and stainless bolts that are available. The two most common grades are stainless fasteners304 and stainless fasteners 316 .
Stainless steel is grouped by its crystalline structure
Stainless Steel Fastener Grades
SAE Grade |
EN – Steel # / DIN |
EN Name |
UNS |
| 440A | 1.4109 | X65CrMo14 | S44002 |
| 440B | 1.4112 | X90CrMoV18 | S44003 |
| 440C | 1.4125 | X105CrMo17 | S44004 |
| 440F | S44020 | ||
| 430 | 1.4016 | X6Cr17 | S43000 |
| 316 | 1.4408 | G-X 6 CrNiMo 18-10 | S31600 |
| 409 | 1.4512 | X6CrTi12 | S40900 |
| 410 | S41000 | ||
| 301 | 1.431 | X10CrNi18-8 | S30100 |
| 301LN | 1.4318 | X2CrNiN18-7 | |
| 304L | 1.4307 | X2CrNi18-9 | S3043 |
| 304L | 1.4306 | X2CrNi19-11 | S30403 |
| 304LN | 1.4311 | X2CrNiN18-10 | S30453 |
| 304 | 1.4301 | X5CrNi18-10 | S30400 |
| 304H | 1.4948 | X6CrNi18-11 | S30409 |
| 305 | 1.4303 | X5CrNi18-12 | S30500 |
| 312 | X5CrNi30-9 | ||
| 310 | 1.4841 | X22CrNi2520 | S31000 |
| 310S | 1.4845 | X 5 CrNi 2520 | S31008 |
| 321 | 1.4541 | X6CrNiTi18-10 | S32100 |
| 321H | 1.4878 | X12CrNiTi18-9 | S32109 |
| 316L | 1.4404 | X2CrNiMo17-12-2 | S31603 |
| 316 | 1.4401 | X5CrNiMo17-12-2 | S31600 |
| 316LN | 1.4406 | X2CrNiMoN17-12-2 | S31653 |
| 316L | 1.4432 | X2CrNiMo17-12-3 | S31603 |
| 316L | 1.4435 | X2CrNiMo18-14-3 | S31603 |
| 316 | 1.4436 | X3CrNiMo17-13-3 | S31600 |
| 316Ti | 1.4571 | X6CrNiMoTi17-12-2 | S31635 |
| 316LN | 1.4429 | X2CrNiMoN17-13-3 | S31653 |
| 317L | 1.4438 | X2CrNiMo18-15-4 | S31703 |
| 2304 | 1.4362 | X2CrNi23-4 | S32304 |
| 2205 | 1.4462 | X2CrNiMoN22-5-3 | S31803/S32205 |
| J405 | 1.4501 | X2CrNiMoCuWN25-7-4 | S32760 |
| 904L | 1.4539 | X1NiCrMoCu25-20-5 | N08904 |
| 1.4529 | X1NiCrMoCuN25-20-7 | N08926 | |
| 254SMO | 1.4547 | X1CrNiMoCuN20-18-7 | S31254 |
-Heat treated conditions of SS fastener
