High ike obere alloy ígwè efere ASTM A709GR.50W nakwa aha ya dị ka weathering ígwè efere A709 Grade 50W na uru nke ya onwunwe na ikuku corrosion eguzogide. Dị ka dị iche iche isi chemical ọcha nwere, A709 Grade 50W kewara dị ka A709Gr50w ụdị A, A709Gr50w ụdị B, A709Gr50w ụdị C. Ndị a atọ ígwè akara ule bụ Ẹkot nkọwa ASTM A 588/A 588M A588 Grade A, na A588 Grade C.Low alloy steel plate A709 Grade 50W nwekwara otu kacha nta mmachi mkpụrụ ike na 345 Mpa dị ka A709 Grade 50 ígwè efere.
A709 Gr.50W weathering ígwè efere, nke a ma ama maka ihe onwunwe ya na ikuku corrosion eguzogide. A709 Grade 50W ígwè efere na-ọtụtụ ebe na-eji na-ewu ígwè, Ngwuputa ígwè, gwongworo, àkwà mmiri, nrụgide arịa ụlọ wdg,
Ihe chọrọ nka na ụzụ na ọrụ ndị ọzọ:
Maka ihe onwunwe ọzọ na A709 Gr.50S ígwè efere, biko lelee ha na-esonụ;
A709 Ọkwa 50S Chemical mejupụtara Heat analysis
Ihe | Chemical% |
C, max | 0.23 |
Mn | 0.50-1.60A |
Si, max | 0.40 |
V, max | 0.15B |
Nb, max | 0.05B |
P, max | 0.035 |
S, max | 0.045 |
Ku, max | 0.60 |
Na xma | 0.45 |
Cr, max | 0.35 |
Mo, max | 0.15 |
Ọkwa A709 | Oke mm |
Mmụba [MPa] |
Tensile [MPa] | Mmụba Min% | mbelata Min % |
HB | |||
Efere ígwè | Nchara arụrụ arụ | ||||||||
8 n'ime [200mm] | 2 n'ime [50mm] | 8 n'ime [200mm] | 2 n'ime [50mm] | ||||||
36[250] | ≤100 | [250] nkeji | 400-550 | 20 | 23 | 20 | 21 | … | … |
[250] nkeji | 400min | … | … | 20 | 19 | … | … | ||
50[345] | ≤100 | Nkeji 345 | 450min | 18 | 21 | 18 | 21F | … | … |
50S[345S] | G | 345-450HI | 450minH | … | … | 18 | 21 | … | … |
50W[345W] HPS50W[HPS345W] |
≤100 | Nkeji 345 | 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 | … |