螺栓螺母性能表
1钢结构用高强度螺栓连接副型号、规格、性能等级
类型名称性能等级规格连接副组成
GB/T1228-91钢结构用高强度大六角头螺栓10.9S
8.8SM12-M30一件螺栓；一件螺母；二件垫圈
GB/T1229-91钢结构用高强度大六角螺母
GB/T1230-91钢结构用高强度垫圈
GB/T1231-91钢结构用高强度大六角头螺栓、
大六角螺母、垫圈技术条件
GB/T3632-1995钢结构用扭剪型高强度螺栓连接副10.9SM16-M24一件螺栓；一件螺母；二件垫圈
GB/T3633-1995钢结构用扭剪型高强度螺栓连接副技术条件
2材料
类型性能等级螺纹规格选用材料
螺栓10.9SM12~M2420MntiB
M27~M3035VB
8.8SM12~M1635#
M20~M2420MnTib
M27~M3035VB
螺母8H10HM12~M3035#
垫圈35~45HRC12~3045#
材料的化学成分
材料C%Si%Mn%Ti%V%B%P%S%
20MnTiB0.17~0.240.17~0.371.30~1.600.04~0.1000.0005~0.0035≤0.035≤0.035
35VB0.31~0.370.17~0.370.50~0.9000.05~0.120.001~0.004≤0.04≤0.04
35#0.32~0.400.17~0.370.50~0.90000≤0.035≤0.035
45#0.42~0.500.17~0.370.50~0.90000≤0.035≤0.035
3机械性能
3-1螺栓机械性能
材料试件机械性能
性能等级抗拉力强度
σb
MPa屈服度σ0.2
MPa伸长率δ5
%收缩率ψ
%
min
10.9S1040~12409401042
8.8S830~10306601245
硬度
性能等级洛氏硬度
HRC维氏硬度
HV30
minmaxminmax
109S3339312367
8.8S2431249296
实物拉力载荷
螺纹规格dM12M16M20M22M24M27M30
应懒力载面积mm284.3157245303353459561
拉力载荷
KN10.9S877.7~104.5163~195255~304315~376367~438477~569583~696
8.8S70.0~86.8130~162203~252251~312293~364381~473466~578
3-2螺母机械性能
保证载荷
螺纹规格DM12M16M20M22M24M27M30
保证载荷
KN10H87.7163255315367477583
8H70.0130203251293381466
硬度
性能
等级洛氏硬度维氏硬度
minmaxminmax
10H98HRB28HRC222274
8H85HRB28HRC206274
3-2垫圈机械性能
垫圈硬度为35~45HRC(HV30329~436)
4型式尺寸
4-1GB/T1228-91钢结构用高强度大六角头螺栓型式尺寸
螺纹规格dM12M16M20M22M24M27M30
螺距p1.7522.52.5333.5
cmax0.80.80.80.80.80.80.8
min0.40.40.40.40.40.40.4
damax15.2319.2324.3226.3228.3232.8435.84
dsmax12.4316.4320.5222.5224.5227.8430.84
min11.7515.5719.4821.4823.4826.1629.16
dwmin19.224.931.433.338.042.846.5
emin22.7829.5637.2939.5545.2050.8555.37
K公称7.51012.514151718.7
max7.9510.7513.4014.9015.9017.9019.75
min7.059.2511.6013.1014.1016.1017.65
rmin1.01.01.51.51.52.02.0
smax21273436414650
min20.1626.163335404549
bL公称<45≥45<55≥55<65≥65<70≥70<75≥75<80≥80<85≥85
公称2530303535404045455050555560
4-2GB/T1229-91钢结构用高强度大六角头螺母型式尺寸
螺纹规格DM12M16M20M22M24M27M30
螺距P1.7522.52.5333.5
cmax0.80.80.80.80.80.80.8
min0.40.40.40.40.40.40.4
damax1317.321.623.825.929.132.4
min12162022242730
dwmin19.224.931.433.338.042.846.5
emin22.7829.5637.2939.5545.2050.8555.37
mmax12.317.120.723.624.227.630.7
min11.8716.419.422.322.926.329.1
smax21273436414650
min20.1626.163335404549
4-3GB/T1230-91钢结构用高强度垫圈型式尺寸
规格(螺纹大径)12162022242730
d1max13.4317.4321.5223.5225.5228.5231.52
min13172123252831
d2max25334042475256
min23.731.438.440.445.450.154.1
s公称3.04.04.05.05.05.05.0
max3.84.84.85.85.85.85.8
min2.53.53.54.54.54.54.5
d3max16.0320.0325.1227.1229.1233.6436.64
min15.2319.2324.3226.3228.3232.8435.84
4-4GB/T3632-1995钢结构用扭剪型高强度螺栓型式尺寸
螺纹规格dM16M20M22M24
螺距p22.52.53
damax18.8324.426.428.4
dsmax16.4320.5222.5224.52
min15.5719.4821.4823.48
dwmin27.934.538.541.5
dkmax30374144
K公称10131415
max10.5713.914.915.9
min9.2512.113.114.1
Kmin12141516
K"max17192123
rmin1.21.21.21.6
dbmax11.314.115.616.9
min1113.815.316.6
dc≈12.816.117.819.3
de≈13171820
5GB/T1228~1231-91高强度大六角头螺栓连接副的扭矩系数
螺纹规格M12M16M20M22M24M27M30
P(KN)max59113177216250324397
min4993142177206265329
◆10.9S高强度大六角头螺栓连接副的扭矩系数平均值0.11~0.150。扭矩系数的标准偏差小于或等于0.010。扭矩系数测定时，预拉力控制范围见上表。
◆8.8S高强度大六角头螺栓连接副，客户有要求，也可按保证扭矩系数供货。
6GB/T3632~3633-1995扭剪型高强度螺栓连接副的紧固轴力
螺纹规格M16M20M22M24
每批紧固轴力的平均值(KN)公称109170211245
max120186231270
min99154191222
紧固轴力标准偏差σ(KN)≤9.9015.3919.1122.25
7标记
GB/T122810.9S
高强度大六角头螺栓GB/T363210.9S
扭剪型高强度螺栓GB/T1229、GB/T3632
10H高强度螺母GB/T1230、GB/T3632
高强度垫圈
8高强度螺栓连接副的使用
8-1高强度螺栓的长度选用
L＝L+△L
式中：L-高强素螺栓工程长度
L-连接板层总厚度
△L-附加长度，按右表螺纹规格M12M16M20M22M24M27M30
大六角头高强度螺栓25303540455055
扭剪型高强度螺栓/25303540// |
