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High ƙarfi low gami karfe farantin ASTM A709GR.50W kuma mai suna a matsayin weathering karfe farantin A709 Grade 50W a cikin fa'idar da dukiya a yanayi lalata juriya. Dangane da nau'ikan sinadarai daban-daban sun ƙunshi, A709 Grade 50W an raba shi azaman A709Gr50w nau'in A, nau'in A709Gr50w nau'in B, nau'in A709Gr50w nau'in C. Waɗannan matakan ƙarfe uku ne daidai da ƙayyadaddun ASTM A 588/A 588M A585 Grade A, Grade A, da A588 Grade C.Low gami karfe farantin A709 Grade 50W kuma sun mallaki mafi ƙarancin ƙarancin yawan amfanin ƙasa a 345 Mpa kamar A709 Grade 50 farantin karfe.
A709 Gr.50W weathering karfe faranti, wanda shi ne sananne ga dukiya a yanayi lalata juriya. A709 Grade 50W karfe faranti ana amfani da ko'ina a yi inji, ma'adinai kayan, truck, gadoji, matsa lamba tasoshin tsarin da dai sauransu.,
Bukatun Fasaha & Ƙarin Sabis:
Don ƙarin dukiya a cikin farantin karfe na A709 Gr.50S, da fatan za a duba su a cikin waɗannan;
A709 Grade 50S Chemical abun da ke ciki Binciken zafi
| Abun ciki | Chemical % |
| C, max | 0.23 |
| Mn | 0.50-1.60A |
| Iya, max | 0.40 |
| V, max | 0.15B |
| Nb, max | 0.05B |
| P, max | 0.035 |
| S, max | 0.045 |
| Ku, max | 0.60 |
| Ni xma | 0.45 |
| Cr, max | 0.35 |
| Mo, max | 0.15 |
| Babban darajar A709 | Kauri mm |
yawa [MPa] |
Tensile [MPa] | Tsawaita Min % | raguwa Min % |
HB | |||
| Karfe Plate | Tsarin karfe | ||||||||
| 8 a cikin [200mm] | 2 a cikin [50mm] | 8 a cikin [200mm] | 2 a cikin [50mm] | ||||||
| 36[250] | ≤100 | [250] min | 400-550 | 20 | 23 | 20 | 21 | … | … |
| [250] min | 400 min | … | … | 20 | 19 | … | … | ||
| 50[345] | ≤100 | 345 min | 450 min | 18 | 21 | 18 | 21F | … | … |
| 50S[345S] | G | 345-450H | 450minH | … | … | 18 | 21 | … | … |
| 50W[345W] HPS50W[HPS345W] |
≤100 | 345 min | 485 min | 18 | 21 | 18 | 21J | … | … |
| HPS70W[HPS485W] | ≤100 | 485 min | 585-760 | … | 19K | … | … | … | … |
| 100 [690], 100W [690W], HPS100W [HPS690W] | ≤65 | 690minB | 760-895 | … | 18K | … | … | L | 235-293M |
| 100 [690], 100W [690W], | 65-100 | 620minB | 690-895 | … | 16K | … | … | L | … |
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