鍋爐用無縫鋼管
執(zhí)行標準: GB3087(2008) —— 低中壓鍋爐用無縫鋼管(國標) GB5310 (2008)—— 高壓鍋爐用無縫鋼管(國標) ASTM A106 —— 高溫用無縫碳鋼公稱管(美標)
化學成分:
標準 |
牌號 |
化學成分(%) |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Cu |
Ni |
V |
Alt |
W |
Nb |
N |
GB3087 |
10 |
0.07~0.13 |
0.17~0.37 |
0.38~0.65 |
≤0.030 |
≤0.030 |
0.3~0.65 |
|
≤0.25 |
≤0.30 |
|
|
|
|
|
20 |
0.17~0.23 |
0.17~0.37 |
0.38~0.65 |
≤0.030 |
≤0.030 |
0.3~0.65 |
|
≤0.25 |
≤0.30 |
|
|
|
|
|
GB5310 |
20G |
0.17~0.23 |
0.17~0.37 |
0.35~0.65 |
≤0.025 |
≤0.015 |
≤0.25 |
≤0.15 |
≤0.20 |
≤0.25 |
≤0.08 |
|
|
|
|
20MnG |
0.17~0.23 |
0.17~0.37 |
0.70~1.00 |
≤0.025 |
≤0.015 |
≤0.25 |
≤0.15 |
≤0.20 |
≤0.25 |
≤0.08 |
|
|
|
|
25MnG |
0.23~0.27 |
0.17~0.37 |
0.70~1.00 |
≤0.025 |
≤0.015 |
≤0.25 |
≤0.15 |
≤0.20 |
≤0.25 |
≤0.08 |
|
|
|
|
15CrMoG |
0.12~0.18 |
0.17~0.37 |
0.40~0.70 |
≤0.025 |
≤0.015 |
0.80~1.10 |
0.40~0.55 |
≤0.20 |
≤0.30 |
|
|
|
|
|
12Cr2MoG |
0.08~0.15 |
≤0.50 |
0.40~0.60 |
≤0.025 |
≤0.015 |
2.00~2.50 |
0.90~1.13 |
≤0.20 |
≤0.30 |
|
|
|
|
|
12Cr1MoVG |
0.08~0.15 |
0.17~0.37 |
0.40~0.70 |
≤0.025 |
≤0.010 |
0.90~1.20 |
0.25~0.35 |
≤0.20 |
≤0.30 |
0.15~0.30 |
|
|
|
|
10Cr9Mo1VNbN |
0.08~0.12 |
0.20~0.50 |
0.30~0.60 |
≤0.020 |
≤0.010 |
8.00~9.50 |
0.85~1.05 |
≤0.20 |
≤0.40 |
0.18~0.25 |
≤0.020 |
|
0.06~0.10 |
0.03~0.07 |
ASTM A106 |
A106B |
0.17~0.25 |
≥0.1 |
0.70~1.00 |
≤0.030 |
≤0.030 |
|
|
|
|
|
|
|
|
|
A106C |
0.23~0.27 |
≥0.1 |
0.70~1.00 |
≤0.030 |
≤0.030 |
|
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|
|
|
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注:Alt指全鋁含量 20G鋼中Alt不大于0.015%,不作交貨要求,但應填入質量證明書中
力學性能:
標準 |
牌號 |
抗拉強度(MPa) |
屈服強度(MPa) |
伸長率(%) |
沖擊功(J) |
硬度 |
GB3087 |
10 |
335~475 |
≥195 |
≥24 |
|
|
20 |
410~550 |
≥245 |
≥20 |
|
|
GB5310 |
20G |
410~550 |
≥245 |
≥24 |
≥35 |
|
20MnG |
≥415 |
≥240 |
≥22 |
≥35 |
|
25MnG |
≥485 |
≥275 |
≥20 |
≥35 |
|
15CrMoG |
440~640 |
≥235 |
≥21 |
≥35 |
|
12Cr2MoG |
450~600 |
≥280 |
≥20 |
≥35 |
|
12Cr1MoVG |
470~640 |
≥255 |
≥21 |
≥35 |
|
10Cr9Mo1VNbN |
≥585 |
≥415 |
≥20 |
≥35 |
|
ASTM A106 |
A106B |
≥415 |
≥240 |
≥22 |
≥35 |
|
A106C |
≥485 |
≥275 |
≥20 |
≥35 |
|
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