DIN2635 Stainless Steel Pipe Flanges PN40 AISI 304/L German Standard
DIN2635 PN40 AISI 304/L German Standard Stainless Steel Flange
Product Information:
| Product Name | DIN2635 PN40 AISI 304/L German Standard Stainless Steel Flange |
| Size Range | DN10 to DN400 |
| Pressure Class | PN40 |
| Standards | AISI 304L |
| Face Type | |
| Specification | DIN2635 |
Standard & Materials: AISI 304L
The SAE/ANSI 304 (AISI 304) is the most commonly available and used type of stainless steel. It is also referred to as 18/8 stainless steel, A2 stainless steel (as per the ISO 3506), or 304S15 (as per the British Standard). This is an austenitic chromium-nickel alloy which practically means that it has a very high corrosion resistance. It is also nonmagnetic and can’t be hardened through heat treatment. As AISI 304 can withstand extremely corrosive environments and can be shaped, machined and welded relatively easy, it is very popular for a wide range of applications.
AISI 304/L Chemical Composition (%)
| Grade | C, max | Cr | Mn, max | Ni | P, max | S, max | Si, max |
| AISI 304 | 0.08 | 18~20 | 2 | 8~10.5 | 0.045 | 0.03 | 1 |
| AISI 304L | 0.03 | 18~20 | 2 | 8~12 | 0.045 | 0.03 | 1 |
AISI 304/L Mechanical Properties
| Mechanical Properties | 304 | 304L |
| Hardness, Knoop | 138 | 158 |
| Hardness, Rockwell B | 70 | 82 |
| Hardness, Vickers | 129 | 159 |
| Tensile Strength, Ultimate | 505 MPa | 564 MPa |
| Tensile Strength, Yield | 215 MPa | 210 MPa |
| Elongation at Break | 70% | 58% |
| Modulus of Elasticity | 193~200 GPa | 193~200 GPa |
| Charpy Impact | 325 J | 216J |
DIN2635 Flange Dimensions (mm)
| DN | d1 | D | b | k | h1 | d3 | S | r | h2 | d4 | f | n | d2 | Weight (kg) |
| 10 | 14.0 | 90 | 16 | 60 | 35 | 25 | 1.8 | 4 | 6 | 40 | 2 | 4 | 14 | 0.67 |
| 15 | 20.0 | 95 | 16 | 65 | 38 | 30 | 2.0 | 4 | 6 | 45 | 2 | 4 | 14 | 0.75 |
| 20 | 25.0 | 105 | 18 | 75 | 40 | 38 | 2.3 | 4 | 6 | 58 | 2 | 4 | 14 | 1.07 |
| 25 | 30.0 | 115 | 18 | 85 | 40 | 42 | 2.6 | 4 | 6 | 68 | 2 | 4 | 14 | 1.29 |
| 32 | 38.0 | 140 | 18 | 100 | 42 | 52 | 2.6 | 6 | 6 | 78 | 2 | 4 | 18 | 1.88 |
| 40 | 44.5 | 150 | 18 | 110 | 45 | 60 | 2.6 | 6 | 7 | 88 | 3 | 4 | 18 | 2.10 |
| 50 | 57.0 | 165 | 20 | 125 | 48 | 72 | 2.9 | 6 | 8 | 102 | 3 | 4 | 18 | 2.81 |
| 100 | 108.0 | 235 | 24 | 190 | 65 | 128 | 3.6 | 8 | 12 | 162 | 3 | 8 | 22 | 6.42 |
| 125 | 133.0 | 270 | 26 | 220 | 68 | 155 | 4.0 | 8 | 12 | 188 | 3 | 8 | 26 | 8.83 |
| 150 | 159.0 | 300 | 28 | 250 | 75 | 182 | 4.5 | 10 | 12 | 218 | 3 | 8 | 26 | 11.67 |
| 250 | 267.0 | 450 | 38 | 385 | 105 | 298 | 7.1 | 12 | 18 | 345 | 3 | 12 | 33 | 33.75 |
| 350 | 368.0 | 580 | 46 | 510 | 125 | 408 | 8.8 | 12 | 20 | 465 | 4 | 16 | 36 | 63.96 |
| 400 | 419.0 | 660 | 50 | 585 | 135 | 462 | 11.0 | 12 | 20 | 535 | 4 | 16 | 39 | 91.99 |
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