Active Member
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[China]
Address: Room 2004, Expo Center, Donfeng Road, Jinshui District, Zhengzhou City, Henan Province, China
Contact name:Lisa
Zhengzhou Huitong Pipeline Equipment Co.,Ltd. |
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Sandvik 253 MA is an austenitic chromium-nickel steel alloyed with nitrogen and rare earth metals. The grade is characterized by:
Approved for use in ASME Boiler and Pressure Vessel Code, Section I, III and VIII, Div. 1 (SA-182, SA-213, SA-240, SA-249 SA-312 and SA-479).
| C | Si | Mn | P | S | Cr | Ni | N | Ce* |
|---|---|---|---|---|---|---|---|---|
| 0.08 | 1.6 | ≤0.8 | ≤0.040 | ≤0.030 | 21 | 11 | 0.17 | 0.05 |
* To cerium should be added the quantity of other rare earth metals, since the the additive takes the form of misch metal containing about 50% Ce.
Seamless tube and pipe in Sandvik 253 MA is supplied in dimensions up to 260 mm (10.2 in.) outside diameter in the solution-annealed and white-pickled condition or solution annealed by a bright-annealing process.
| Proof strength | Tensile strength | Elong. | Elong. | Hardness | |
|---|---|---|---|---|---|
| Rp0.2a) | Rp1.0a) | Rm | Ab) | A2" | Vickers |
| MPa | MPa | MPa | % | % | |
| ≥310 | ≥350 | 650-850 | ≥40 | ≥40 | ≈190 |
1 MPa = 1 N/mm2
| Proof strength | Tensile strength | Elong. | Elong. | Hardness | |
|---|---|---|---|---|---|
| Rp0.2a) | Rp1.0a) | Rm | Ab) | A2" | Vickers |
| ksi | ksi | ksi | % | % | |
| ≥45 | ≥51 | 94-123 | ≥40 | ≥40 | ≈190 |
a) Rp0.2 and Rp1.0 correspond to 0.2% offset and 1.0% offset yield
strength, respectively.
b) Based on L0 = 5.65 √S0 where L0 is the original gauge length and
S0 the original cross-section area
| Temperature | Proof strength | Tensile strength | |
|---|---|---|---|
| °C | Rp.02 | Rp1.0 | Rm |
| MPa | MPa | MPa | |
| 100 | ≥225 | ≥265 | ≥550 |
| 200 | ≥189 | ≥215 | ≥475 |
| 300 | ≥170 | ≥200 | ≥440 |
| 400 | ≥160 | ≥190 | ≥425 |
| 500 | ≥150 | ≥180 | ≥400 |
| 600 | ≥140 | ≥165 | ≥340 |
| Temperature | Proof strength | Tensile strength | |
|---|---|---|---|
| °F | Rp.02 | Rp1.0 | Rm |
| ksi | ksi | ksi | |
| 200 | ≥33.5 | ≥39.0 | ≥80.5 |
| 400 | ≥26.0 | ≥31.0 | ≥68.5 |
| 600 | ≥24.5 | ≥28.5 | ≥63.6 |
| 800 | ≥23.0 | ≥27.5 | ≥61.0 |
| 1000 | ≥21.0 | ≥25.5 | ≥55.0 |
| 1200 | ≥19.5 | ≥23.0 | ≥46.5 |
The creep and creep rupture strength values correspond to values evaluated by the Swedish Institute for Metals Research for inclusion in the Swedish Standard. The evaluation is based on data submitted by AB Sandvik Materials Technology and Outokumpu Stainless and tests made by the Swedish Institute for Metals Research. The values apply to tube, pipe, sheet, plate and bar steel.
The higher values given in parentheses apply to Sandvik seamless tube and pipe only. The basic values have been determined by testing at intervals of 100°C and at 750°C (1380°F), under uniaxial stress and with a constant load. The mean values in the tables below have been evaluated from the test results with the aid of linear regression of the logarithmic relationship between stress and time. This evaluation has also provided the basis of interpolation and extrapolation of temperatures and times.
The temperature above which design calculations are based on creep rupture strength instead of Rp0.2 proof strength, can be read off from Fig. 1. For Sandvik 253 MA this temperature is about 550°C (1020°F). Fig. 2 shows the relationship between nominal stress and minimum creep rate, measured during testing under constant load.
| Temperature | Creep strength 1% | Creep rupture strength | ||
|---|---|---|---|---|
| °C | 10 000 h | 100 000 h | 10 000 h | 100 000 h |
| MPa | MPa | MPa | MPa | |
| 525 | - | - | - | 162 |
| 550 | - | - | - | 128 |
| 575 | - | - | 167 | 102 |
| 600 | 117 | 70 | 138 | 82 |
| 625 | 93 | 55 | 112 | 64 |
| 650 | 75 | 42 | 94 | 52 |
| 675 | 59 | 32 | 76 | 43 |
| 700 | 46 | 25 | 62 | 33 |
| 725 | 37 | 20 | 50 | 27 |
| 750 | 31 | 16 | 41 | 22 |
| 775 | 25 | 13 | 33 | 18 |
| 800 | 20 | 11 | 27 (28) | 15 (16) |
| 825 | 17 | 9.4 | 22 (23) | 12 (14) |
| 850 | 14 | 8.0 | 18 (20) | 10 (12) |
| 875 | 12 | 6.7 | 15 (17) | 8.8 (10) |
| 900 | 10 | 5.7 | 13 (14) | 7.5 (8.4) |
| 925 | 8.5 | 4.8 | 11 (12) | 6.6 (7.2) |
| 950 | 7.3 | 4.0 | 9.6 (10.5) | 5.7 (6.3) |
| 975 | 6.3 | 3.5 | 8.2 (9.0) | 5.0 (5.8) |
| 1000 | 5.4 | 3.0 | 7.0 (7.8) | 4.3 (4.9) |
| 1025 | - | - | 6.2 (6.6) | 3.8 |
| 1050 | - | - | 5.5 (5.7) | 3.3 |
| 1075 | - | - | 4.9 | 3.0 |
| 1100 | - | - | 4.3 | 2.6 |
| Temperature | Creep strength 1% | Creep rupture strength | ||
|---|---|---|---|---|
| °F | 10 000 h | 100 000 h | 10 000 h | 100 000 h |
| ksi | ksi | ksi | ksi | |
| 1000 | - | - | - | 20.9 |
| 1050 | - | - | - | 16.1 |
| 1100 | - | - | 21.2 | 12.6 |
| 1150 | 13.9 | 8.3 | 17.1 | 9.7 |
| 1200 | 10.9 | 6.1 | 13.8 | 7.5 |
| 1250 | 8.4 | 4.5 | 10.7 | 5.9 |
| 1300 | 6.5 | 3.5 | 8.6 | 4.6 |
| 1350 | 5.1 | 2.8 | 6.8 | 3.8 |
| 1400 | 4.1 | 2.2 | 5.5 | 2.9 |
| 1450 | 3.2 | 1.7 | 4.3 (4.4) | 2.5 |
| 1500 | 3.6 | 1.42 | 3.4 (3.6) | 1.9 (2.1) |
| 1550 | 2.2 | 1.19 | 2.7 (3.0) | 1.5 (1.8) |
| 1600 | 1.7 | 0.99 | 2.2 (2.5) | 1.25 (1.5) |
| 1650 | 1.45 | 0.81 | 1.9 (2.0) | 1.07 (1.26) |
| 1700 | 1.23 | 0.68 | 1.6 (1.7) | 0.93 (1.04) |
| 1750 | 1.04 | 0.58 | 1.33 (1.46) | 0.80 (0.88) |
| 1800 | 0.87 | 0.49 | 1.13 (1.03) | 0.70 (0.75) |
| 1850 | - | - | 0.96 (1.03) | 0.59 (0.68) |
| 1900 | - | - | 0.84 (0.88) | 0.51 |
| 1950 | - | - | 0.75 (0.77) | 0.45 |
| 2000 | - | - | 0.67 | 0.39 |
Fig. 1. Proof strength Rp0.2 and creep tupture strength at 10 000
and 100 000 h.
Fig. 2 Relationship between nominal stress and minimum creep rate
at 600 –1100°C (1110–2010°F).
