Seamless Stainless Steel Tube MT302 , MT304 Grade DNV Certificate
ASTM A213 ASTM A213 TP304, TP304L, TP321 TP310 Seamless Stainless Steel
Application:
Mechanical application, which needs corrosion-resistant or high-temperature strength.
Shape:
Round, Rectangle, Square, or special
Grade:
MT 304, MT304L,
MT309, MT309S,
MT 310S,
MT 316, MT316L,
MT317,MT321, MT347
TABLE 1 Chemical Requirements of Austenitic Stainless Steels
| Grade | Composition,% | ||||||
| Carbon | Mangan-ese,max | Phosphorus,max | Sulfur,max | Silicon,max | Nickel | Chromium | |
| MT302 | 0.08 to 0.20 | 2.00 | 0.040 | 0.030 | 1.00 | 8.0-10.0 | 17.0-19.0 |
| MT304 | 0.08max | 2.00 | 0.040 | 0.030 | 1.00 | 8.0-11.0 | 18.0-20.0 |
| MT304L | 0.035max4 | 2.00 | 0.040 | 0.030 | 1.00 | 8.0-13.0 | 18.0-20.0 |
| MT310S | 0.08max | 2.00 | 0.040 | 0.030 | 1.00 | 19.0-22.0 | 24.0-26.0 |
TABLE 2 Chemical Requirements of Ferritic and Martensitic Stainless Steels
| Grade | Composition,% | ||||||
| Carbon | Mangan-ese,max | Phosphorus,max | Sulfur,max | Silicon,max | Nickel | Chromium | |
| Martensitic | |||||||
| MT410 | 0.15 | 1.00 | 0.040 | 0.030 | 1.00 | 0.50max | 11.5-13.5 |
| MT416Se | 0.15 | 1.25 | 0.060 | 0.060 | 1.00 | 0.50max | 12.0-14.0 |
| MT413 | 0.20 | 1.00 | 0.040 | 0.030 | 1.00 | 1.25-2.50 | 15.0-17.0 |
| Ferritic | |||||||
| MT405 | 0.08 | 1.00 | 0.040 | 0.030 | 1.00 | 0.50max | 11.5-14.5 |
| MT429 | 0.12 | 1.00 | 0.040 | 0.030 | 1.00 | 0.50max | 14.0-16.0 |
| MT443 | 0.20 | 1.00 | 0.040 | 0.030 | 1.00 | 0.50max | 18.0-23.0 |
Tensil Requirements
| Grade and UNS | Tensile strength min ksi [Mpa] | Yield strength min ksi | Elongation in 2in or 50mm min % | |
| 304, 316 S30400, S31600 | 75 [515] | 30 [205] | 35 | |
| 304L, 316L S30403, S31603 | 70 [485] | 25 [175] | 35 | |
| XM-29 S24000 | 100 [690] | 55 [380] | 35 | |
| 304N, 316N S30451, S31651 | 80 [550] | 35 [240] | 20 | |
| 304LN, 316LN S30453, S31653 | 75 [515] | 30 [205] | 35 | |
Reference Documents:
ASTM Standards:
ASTM A370 Test Methods and Definition for Mechanical Testing of Steel Products
ASTM A1016/A 1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic
Alloy Steel, and Stainless Steel Tubes
ASTM E59 Practice for Sampling Steel and Iron for Determination of Chemical Composition
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