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Productdetails:
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| Productstandaard: | ASTM A193 klasse B7 | Bar standaard: | ASTM A29 / A322 |
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| Staalkwaliteit: | AISI 4140 / 42CrMo4 / SCM440 / 1.7225 | Voorwaarde: | Gedoofd en getemperd (Q&T) |
| Nominale diameter: | 31,75 mm (1-1/4 inch) | Tolerantie: | +0 / -0,025 mm (h7) |
| Oppervlakteafwerking: | Precisiegeslepen, Ra 0,4 um typisch | Treksterkte: | 860 MPa min |
| Opbrengststerkte: | 725 MPa min | Verlenging: | 16% min |
| Verlaging van de oppervlakte: | 50% min | Hardheid: | 28-34 HRC typisch, 321 HB max |
| Rechtheid: | Maximaal 1 mm per meter | Lengte: | 3000-6000 mm of op lengte gezaagd |
| Vorm: | Ronde | Sollicitatie: | B7 draadeinden, draadstang, trekstangen, zuigerstangen |
| Markeren: | ASTM A193 B7 ground bar,Precision ground 4140 round bar,31.75mm Q&T alloy steel bar |
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ASTM A193 Grade B7 AISI 4140 Quenched and Tempered Precision Ground Steel Round Bar 31.75 mm h7 This 31.75 mm (1-1/4 inch) bar is supplied in AISI 4140 (42CrMo4 / SCM440 / 1.7225) chromium-molybdenum alloy steel, quenched and tempered to meet ASTM A193 Grade B7 mechanical requirements, then precision ground to +0 / −0.025 mm (h7). It is the standard feedstock for B7 stud bolts, cap screws and high tensile threaded rod, supplied pre-ground so fastener producers can thread or
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