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ASTM A709 ígwè efere
ASTM A709 ígwè efere
ASTM A709 ígwè efere
ASTM A709 ígwè efere

ASTM A709 ígwè efere

ASTM A709 / A709M Standard Specification for Carbon and High-Strength Low Alloy Structural Steel Stapes, Plates, and Bars and Quenched-and-Tempered Alloy Structural Plates for Bridges Products and Services / Standards & Publications / Standards Ngwaahịa
Ozi ngwaahịa
ASTM A709 bụ ọkọlọtọ ọkọlọtọ maka Structural Steel for Bridges na-agụnye carbon, alloy siri ike dị elu, na igwe na-emenyụ ọkụ na-ekpo ọkụ na-eji dị ka efere nhazi n'iwu àkwà mmiri. Gnee na-enye akararị A709 ise ndị a; 36, 50, 50W, HPS 50W na HPS 70W. Ọkwa ihu igwe atọ nke 50W, HPS 50W, na HPS 70W nwere ASTM G101 emelitere ikuku Nguzogide Nguzogide nke ≥6.0.
Ngwakọta kemịkalụ & akụrụngwa akụrụngwa
A709 Ọkwa 36 Chemical mejupụtara Heat analysis
Oke mm Nchara arụrụ arụ Efere ígwè Gburugburu Ogwe ígwè
≤20 20 ≤40 40~≤65 65~≤100 ≤20 20 ≤40 40~≤100
C, max,% 0.25 0.25 0.25 0.25 0.27 0.26 0.27 0.28
Mn,% 0.80-1.20 0.80-1.20 0.80-1.20 0.60-0.90 0.60-0.90
P, max,% 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04
S, kacha,% 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05
Si 0.40 kacha 0.40 kacha 0.40 kacha 0.15-0.40 0.15-0.40 0.40 kacha 0.40 kacha 0.40 kacha
Cu,min,% 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20

709 Gr. 36 n'ibu ihe onwunwe
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

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