ASTM A276 yog tus qauv kev qhia tshwj xeeb uas npog cov khoom kub-tiav lossis txias-tiav tshwj tsis yog cov tuav rau reforging. Nws suav nrog rounds, squares, thiab hexagons, thiab kub-dov los yog extruded duab, xws li cov ces kaum, tees, thiab channels nyob rau hauv cov feem ntau siv hom stainless hlau. Cov khoom dawb-machining hom rau kev tiv thaiv corrosion dav dav thiab cov kev pabcuam kub kub tau them rau hauv ib qho kev qhia tshwj xeeb. Muaj ntau qib stainless hlau hauv ASTM A276 specification: 202, 304, 316, 440A, 440B, 440C thiab lwm yam.
Chemical Composition (%) ntawm ASTM A276
| Qib | UNS npeB | C | Mn | P | S | Si | Cr | Ni | Mo | N |
| 202 | S20200 | 0.15 | 7.5-10.0 | 0.060 | 0.030 | 1.00 | 17.0-19.0 | 4.0-6.0 | - | 0.25 |
| 304 | S30400 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | - | - |
| 316 | S31600 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | - |
| 403 | S40300 | 0.15 | 1.00 | 0.040 | 0.030 | 0.50 | 11.5-13.0 | - | - | - |
| 410 | S41000 | 0.08-0.15 | 1.00 | 0.040 | 0.030 | 1.00 | 11.5-13.5 | - | - | - |
| 430 | S43000 | 0.12 | 1.00 | 0.040 | 0.030 | 1.00 | 16.0-18.0 | - | - | - |
| 431 | S43100 | 0.20 | 1.00 | 0.040 | 0.030 | 1.00 | 15.0-17.0 | 1.25-2.50 | - | - |
| 440A | S44002 | 0.60-0.75 | 1.00 | 0.040 | 0.030 | 1.00 | 16.0-18.0 | - | 0.75 | - |
| 440B | S44003 | 0.75-0.95 | 1.00 | 0.040 | 0.030 | 1.00 | 16.0-18.0 | - | 0.75 | - |
| 440C | S44004 | 0.95-1.20 | 1.00 | 0.040 | 0.030 | 1.00 | 16.0-18.0 | - | 0.75 | - |
B Kev Tsim Nyog tau tsim los ua raws li Txoj Cai E 527 thiab SAE J 1086.
Mechanical Properties
| Hom | Qhov xwm txheej | Ua kom tiav | Txoj kab uas hla los yog Thickness, in. (mm) | Tensile zog, min | Yield zogA, min | Elongation hauv 2 nti. (50mm)B los yog 4D min, feem pua | Kev txo qis ntawm cheeb tsam, C,D min, feem pua | Brinell Hardness,E max | ||
| ksi ua | MPa | ksi ua | MPa | |||||||
| 202 | A | kub-tiav los yog txias-tiav | tag nrho | 75 | 515 | 40 | 275 | 40 | 45 | - |
| 304, 316 | A | kub-tiav | tag nrho | 75F | 515 | 30F | 205 | 40G | 50 | - |
| txias ua tiav | mus txog 1/2 (12.70) incl | 90 | 620 | 45 | 310 | 30 | 40 | - | ||
| tshaj 1/2 (12.70) | 75F | 515 | 30F | 205 | 30 | 40 | - | |||
| 403, 410 | A | kub-tiav | tag nrho | 70 | 480 | 40 | 275 | 20 | 45 | - |
| txias ua tiav | tag nrho | 70 | 480 | 40 | 275 | 16 | 45 | - | ||
| 403, 410 | T | kub-tiav | tag nrho | 100 | 690 | 80 | 550 | 15 | 45 | - |
| txias ua tiav | tag nrho | 100 | 690 | 80 | 550 | 12 | 40 | - | ||
| 403, 410 | H | kub-tiav | tag nrho | 120 | 830 | 90 | 620 | 12 | 40 | - |
| txias ua tiav | tag nrho (rounds xwb) | 120 | 830 | 90 | 620 | 12 | 40 | - | ||
| 430 | A | kub-tiav los yog txias-tiav | tag nrho | 60 | 415 | 30 | 207 | 20 | 45 | - |
| 431 | A | kub-tiav los yog txias-tiav | tag nrho | - | - | - | - | - | - | 285 |
| 440A,440B,440C | A | kub-tiav | tag nrho | - | - | - | - | - | - | 269 |
| txias ua tiav | tag nrho | - | - | - | - | - | - | 285 | ||
Lub zog tawm los yuav tsum tau txiav txim siab los ntawm {{0}}.2 feem pua ntawm txoj kev ua raws li Txoj Cai Kev Xeem thiab Cov Lus Txhais A 370. Lwm txoj hauv kev los txiav txim siab yield zog yuav raug siv raws li tag nrho txuas ntxiv nyob rau hauv lub load ntawm 0.5 feem pua.
B Rau qee cov khoom tshwj xeeb, nws yuav tsis tuaj yeem siv tau rau kev siv 2-in. los yog 50-mm gage length. Kev siv cov qauv ntsuas me me, thaum tsim nyog, tau tso cai raws li Kev Ntsuas Kev Ntsuas thiab Cov Lus Txhais A 370.
C Kev txo qis ntawm cheeb tsam tsis siv rau cov kab tiaj tus 3⁄16 nyob rau hauv. (4.76 mm) thiab nyob rau hauv tuab raws li qhov kev txiav txim siab no feem ntau tsis ua rau cov khoom loj no.
D Cov khoom siv yuav tsum muaj peev xwm ua tau raws li qhov yuav tsum tau ua ntawm qhov txo qis ntawm thaj chaw uas tau teev tseg, tab sis qhov tseeb ntsuas thiab qhia txog qhov txo qis ntawm cheeb tsam tsis tas yuav tsum tau tshwj tsis yog tias tau teev tseg hauv daim ntawv xaj yuav khoom.
E lossis sib npaug Rockwell hardness.
F Rau cov duab extruded ntawm tag nrho cov Cr-Ni qib A, lub zog tawm los yuav tsum yog 25 ksi (170 MPa) min, thiab tensile lub zog yuav tsum yog 70 ksi (480 MPa) min.
Kev kho cua sov
| NtauseA | Kev kho cua sov kubB degree F (degree), min | Quenchant | Hardness HRC, min |
| 403 | 1750 [955] | Cua | 35 |
| 410 | 1750 [955] | Cua | 35 |
| 414 | 1750 [955] | Roj | 42 |
| 420 | 1825 [995] | Cua | 50 |
| S42010 | 1850 [1010] | Roj | 48 |
| 431 | 1875 [1020] | Roj | 40 |
| 440A | 1875 [1020] | Cua | 55 |
| 440B | 1875 [1020] | Roj | 56 |
| 440C | 1875 [1020] | Cua | 58 |
Ib qho qauv rau kev kuaj yuav tsum yog nyob rau hauv daim ntawv ntawm ib seem tsis pub tshaj 3⁄8 nyob rau hauv. (9.50 mm) nyob rau hauv thickness.
B Kub kam rau ua yog 625 degree F (14 degree).
Qhov xwm txheej:
Cov tuav yuav tsum tau muab tso rau hauv ib qho ntawm cov xwm txheej hauv qab no:
-Txoj Cai A: Annealed
-Qhov H: Hardened thiab tempered ntawm qhov kub tsis tshua muaj
-Condition T: Hardened thiab Tempered ntawm qhov kub thiab txias
-Txoj Cai S: Lim Hardened lossis txheeb ze ua haujlwm txias
-Txoj Cai B: Kev ua haujlwm txias heev
Ordering Information
Nws yog lub luag haujlwm ntawm tus neeg yuav khoom los qhia tag nrho cov kev xav tau uas tsim nyog rau cov khoom xaj raws li qhov tshwj xeeb no. Cov kev cai no yuav suav nrog tab sis tsis txwv rau cov hauv qab no:
-Quantity (qhov hnyav lossis tus naj npawb ntawm daim)
- Lub npe ntawm cov khoom: stainless hlau
- Daim ntawv (bars, ces kaum, thiab lwm yam)
-Qhov xwm txheej
- Tiav
-Ntoo npaj cov duab
-Siv qhov ntev xws li qhov loj, tuab, dav, thiab ntev
- Hla ntu (puab, square, thiab lwm yam)
- Hom lossis UNS npe
- ASTM lub npe thiab hnub tim ntawm qhov teeb meem
-Txawm cov tuav yuav tsum tau dov li tuav los yog txiav los ntawm sawb los yog phaj
-Test rau magnetic permeability thaum teev los ntawm cov neeg yuav khoom xaj thaum xaj Hom 201 thiab 205
- Cov cai tshwj xeeb
