A106B Steel Material Properties

[Creigbm]

I am looing for some material properties on A106B steel tubing. I founnd a source that has the tensile strength, but I am specifically looking for bearing and shear. Thanks in advance.

 

[metengr]

The following are reported and estimated minimum mechanical properties for ASTM A 106 Grade B material at ambient temperature;

UTS - 60 Ksi
YS (0.2% offset) - 35 Ksi

Estimated Value

Shear yield point (0.58*35 Ksi) = ~ 20 Ksi
Ultimate Shear strength (0.75*60 Ksi) = ~ 45 Ksi

Bearing stress is not as mechanical property, it is a calculated value based on projected area * strength

 

[metengr]

To avoid any confusion in my last post,

Bearing stress = force/projected area

 

[Creigbm]

Whoops, I meant bearing strength, or even compressive strength.

 

[metengr]

What is your specific application that you need to determine or estimate bearing and compressive stresses?

 

[Creigbm]

I basically have a lap joint in which there are 24 raidal fasteners securing a two cans together. This can will undergo dynamic loading so if the bearing strength of the material is reached (by the faseners) and the holes elongate, this part may fail.

 

[metengr]

You are mixing terms in your post. What you need is to calculate an allowable shear strength value for the lap joint = calculated shear strength/1.5 (as a safety factor).


The holes will elongate under combined tensile and shear stresses. The shear strength will be reached first so this is what you should use for your design assumption.

set the allowable bearing strength = calculated shear yield point/1.5

Once you have determined the allowable shear strength you can now estimate the projected or bearing area of the lap joint to carry this force. This is done by calculating the total cross sectional area of the lap joint in the direction of applied force and subtract it from the projected area of the fastener holes (number of fastener holes x the projected area of each hole under load). The difference in cross sectional areas would be the net cross sectional area of the lap joint that carries the dynamic force. Dividing the dynamic force by the net cross sectional area of the lap joint would determine the bearing strength. This can be compared to your allowable bearing strength value.

I used this simplistic example here for illustrative purposes.