钢材的硬度比较

《钢材的硬度比较》由会员分享，可在线阅读，更多相关《钢材的硬度比较（6页珍藏版）》请在装配图网上搜索。

1、钢材的硬度比较钢材的硬度比较Hardness Comparisons for Steel与布氏硬度大致相等的硬度数值Approximate Equivalent Hardness Numbers for Brinell Hardness Numbers for Steel(s)布氏压痕 直径 毫米 Brinell indentatio n dia., mm10毫米 标准球 10mm Standar d ball布氏硬度球3000公斤Hultgren 球Brinell hardness ball.3000-kgHultgren ball数值(b) 负载碳 化 钨球 No.(b).loadTung

2、ste n carbide ball金刚石 锥 硬度标 号 Diamond pyramid hardnes s No.洛氏硬度数值(s)Rockwell hardness No. (s)洛氏表面硬度数值 表面金刚石锥试头Rockwell superficial hardness No.superficial brale penetrator肖氏 scelroscop e 硬度数值Shore scelroscop e hardness No.张力强度 (大致为) 1000 psi Tensile strength (appro x.),1000 psi布氏压痕 直径 毫米 Brinell ind

3、entatio n dia., mmA刻度，60公斤 负载， 金刚石锥 试头 A-scale,60-kg load, brale penetrato rB刻度， 100公斤 负载， 1/6英寸 直径球 B scale, 100-kg load, 1/6-in diaC刻度， 150公斤 负载， 金刚石锥 试头 C-scale, 150-kg load, brale penetrato rD刻度，100公斤 负载， 金刚石锥 试头D-scale, 100-kg load, brale penetrato r15N 刻度， 15公斤 负载 15-N scale,15-kg load30N 刻度，

4、30公斤 负载 30-N scale, 30-kg load45N 刻度， 45公斤 负载 45-N scale, 45-kg load050493703587010728713306794085.668.92085.367.90085.067.76788084.766.75786084.465.2.2574584084.165.73382083.864.72280083.464.2.3071271078083.063.69876082.662.68474082.261.2.3568273782.261.67072081.861.65670081.360.2.4065369781.260.64

5、769081.159.63868080.859.63067080.658.2.4562766780.558.2.5060167780.759.60164079.857.2.5557864079.857.57861579.156.2.6055560778.855.55559178.454.76.993.284.475.49776.593.084.074.89676.192.983.674.29575.792.783.173.69375.392.582.773.19274.892.382.272.2912.2574.392.181.771.89073.891.881.171.0889 on73.3

6、91.580.470.2872.3072.691.279.769.48672.191.079.168.672.091.079.068.5842.3571.590.778.467.78370.890.377.666.770.790.277.566.5812.4070.590.177.266.270.189.876.865.78032969.889.776.465.332469.789.676.365.1793232.4570.089.876.865.73282.5068.789.075.163.57730968.789.075.163.53092.5567.788.473.962.1752976

7、7.488.173.561.62932.6066.787.372.760.6732852.6553457978.054.066.187.572.059.82.792.6553456977.853.565.887.271.659.2712742.7051455377.152.565.087.270.758.02662.7051454776.952.164.786.770.357.6702632.7549553976.751.664.386.569.956.92592.7549553076.451.163.986.369.556.225449552876.351.063.886.069.456.1

8、682532.8047751675.950.363.285.968.755.22472.8047750875.649.662.785.668.254.5662432.8546149575.148.861.985.367.453.52372.8546149174.948.561.784.967.253.2652352.9044447474.347.261.084.766.051.72262.9044447274.247.160.884.165.851.5632252.9542942942945573.445.759.784.064.649.9612172.953.0041541541544072

9、.844.558.883.463.548.4592103.003.0540140140142572.043.157.882.862.346.9582023.053.1038838838841071.441.856.882.061.145.3561953.103.1537537537539670.640.455.781.459.943.6541883.153.2036336336338370.039.154.680.058.742.0521823.203.2535235235237269.3110.037.953.879.357.640.5511763.253.3034134134136068.

10、7109.036.652.878.656.439.1501703.303.3533133133135068.1108.535.551.978.055.437.8481663.353.4032132132133967.5108.034.351.077.354.336.4471603.403.4531131131132866.9107.533.150.076.753.334.4461553.453.5030230230231966.3107.032.149.376.152.233.8451503.503.5529329329330965.7106.030.948.375.551.232.44314

11、53.553.6028528528530165.3105.529.947.675.050.331.21413.603.6527727727729264.6104.528.846.774.449.329.9411373.653.7026926926928464.1104.027.645.973.748.328.5401333.703.7526226226226963.0103.026.645.073.147.327.3391293.753.8025525525526963.0102.025.444.272.546.226.0381263.803.8524824824826162.5101.024

12、.243.271.745.124.5371223.853.9024124124125361.8100.022.842.070.943.922.8361183.903.9523523523524761.499.021.741.470.342.921.5351153.954.0022922922924160.898.220.540.569.741.920.1341114.004.0522322322323497.318.84.054.1021721721722896.417.5331054.104.2020720720721894.615.2321004.204.3019719719720792.

13、812.730954.304.4018718718719690.710.0904.404.5017917917918889.08.027874.504.6017017017017886.85.426834.604.7016316316317185.03.325794.704.8015615615616382.90.9764.804.9014914914915680.823734.905.0014314314315078.722715.005.1013713713714376.421675.105.2013113113113774.0655.205.3012612612613272.020635

14、.305.4012112112112769.819605.405.5011611611612265.718585.505.6011111111111765.715565.60a.与结合SAE-ASME-ASTM硬度值相应的黑体数值转换为ASTM E48，表3。The values in bold face type correspond to the values in the Joint SAE-ASME-ASTM hardness conversions as printed in ASTM E48, Table 3.b.布氏硬度以外加的压痕直径为基础。如果在检测期间出现球的变形(压扁)，

15、则用维氏金刚石锥硬度计、洛氏金刚石锥头硬度计或其它 队变形不敏感的硬度计试头检测而得的相关的布氏数值就会因这种变形的不同而有所不同。因此，对于高硬度，布氏硬度计和维氏硬 度计或洛氏硬度计的检测值之间的关系就会受到所采用的球体的影响。钢球(标准或Hultgren)与碳化球相比会更加容易出现轻微的扁 平，导致比碳化球更大的压痕和更小的布氏值。因此，在640维氏硬度计试样上，Hultgren球的压痕是2.55毫米(578布氏硬度值)， 而碳化球的压痕是2.50毫米(601布氏硬度值)。反过来，如果两种类型的球的压痕直径相同，则相当于具有不相同的维氏或洛氏硬度 值。因此，如果两种材料检测的压痕都是2.

16、55毫米(578布氏硬度值)，则Hultgren球的维氏硬度值就是640，而碳化球检测的维氏硬 度值就是 615。Brinell numbers are based on the diameter of impressed indentation. If the ball distorts (flattens) during test, Bri nell numbers will vary in accordance with the degree of such distortion when related to hardness determined with a V ickers di

17、amond pyramid, Rockwell brale or other penetrator which does not sensibly distort. At high hardness, theref ore, the relationship between Brinell and Vickers or Rockwell scales is affected by the type of ball used. Steel bal ls (standard or Hultgren) tend to flatten slightly more than carbide balls,

18、 resulting in larger indentation and lowe r Brinell number than shown by a carbide ball. Thus, on a specimen of 640 Vickers, a Hultgren ball will leave a 2.55 mm impression (578 Bhn) and the carbide ball a 2.50 mm impression (601 Bhn). Conversely, identical impression diame ters for both types of ball will correspond to different Vickers or Rockwell values. Thus, if both impressions are 2.55 mm (578 Bhn) material tested with a Hulgren ball has a Vickers hardness of 640, while material tested with a ca rbide ball has a Vickers hardness of 615c.红色数值超出了正常范围。Values in red are beyond normal range.