In this post I'll talk about and give details about ASTM A437. First let's describe it and then have a look at its material's properties.
Ok let's start with ASTM A437 chemical composition.
Learn more about chemical composition.
Now it's the mechanical properties turn:
Learn more about what is yield strength.
Learn more about what is tensile strength.
Learn more about what is elongation.
Learn more about reduction of area.
Learn more about what is hardness.
Learn more about impact testing (charpy v notch).
Other properties:
Learn more about density.
Learn more about the Elastic Modulus.
Learn more about the poisson ratio.
Learn more about the what is allowable stress.
I ranked materials according to their yield strengths and ASTM A437 currently ranks 7 in my yield strength index. This means there are other 6 materials that are more resistant.
Note: I've analysed 134 materials in order to create an yield strength index. Check my astm material's comparison post for more details.
What is the difference between Code, Standard & Specification?
This video will walk you through:
That gives credibility to your paper and it is sometimes required in higher education.
To make your life (and citation) easier just copy & paste the information below into your assignment or essay:
Luz, Gelson. ASTM A437 Properties (Chem., Mech. & Rankings). Materials Blog. Gelsonluz.com. dd mmmm. yyyy. <URL>
Now replace dd, mmmm and yyyy with the day, month, and year you browsed this page. Also replace URL for the actual url of this page (The < and > stay, ok?). This citation format is based on MLA.
Bolting Intended for Use at Any Temperature from Cryogenic
to the Creep Range
E292 Test Methods for Conducting Time-for-Rupture Notch
Tension Tests of Materials
E112 Test Methods for Determining Average Grain Size
What is ASTM A437?
ASTM A437 is a Specification for Stainless and Alloy-Steel Turbine-Type Bolting Specially Heat Treated for High-Temperature Service.Category
Corrosion-Resisting and Heat-Resisting SteelsScope
This specification covers stainless and alloy-steel bolting specially heat treated for high-temperature service, such as steam turbine, gas turbine, and similar uses.Ok let's start with ASTM A437 chemical composition.
Chemical Composition
Grade B4B
C
0.20 - 0.25Mn
0.50 - 1.00P max.
0.025S max.
0.025Si
0.20 - 0.50Ni
0.50 - 1.00Cr
11.0 - 12.5Mo
0.90 - 1.25V
0.20 -0.30W
0.90 - 1.25Al max.
0.05Ti max.
0.05Tin max.
0.04Learn more about chemical composition.
Now it's the mechanical properties turn:
Yield Strength
Grade B4B
105 ksi (720 MPa) minLearn more about what is yield strength.
Tensile Strength
Grade B4B
145 ksi (1000 MPa) min.Learn more about what is tensile strength.
Elongation (min.) 50 mm
0.13.Learn more about what is elongation.
Reduction of Area (min. %)
0.3.Learn more about reduction of area.
Hardness Requirements
B4B Bolts
331 HB max.Learn more about what is hardness.
Impact Requirements
Grade B4B
14J min. At room temperatureLearn more about impact testing (charpy v notch).
Other properties:
Density
7480 - 8000 kg/m3 (around 7.9 g/cm3 or 0.285 lb/in3).Learn more about density.
Elastic Modulus
180 GPa (26107 ksi) - 210GPa (30458 ksi).Learn more about the Elastic Modulus.
Poisson's Ratio
Usually around 0.26 – 0.31.Learn more about the poisson ratio.
Allowable Stress
Depends on the project (And its factor of safety).Learn more about the what is allowable stress.
My Material's Rank
While engineers will often look for the cheapest material they can use, I took a different approach to material's selection to help newbie students.I ranked materials according to their yield strengths and ASTM A437 currently ranks 7 in my yield strength index. This means there are other 6 materials that are more resistant.
Note: I've analysed 134 materials in order to create an yield strength index. Check my astm material's comparison post for more details.
Details and PDF
Instructions:
- Go to this page.
- Type the name of the standard you are looking for in the search box. Tip: Don't forget to include "ASTM" as a keyword.
- Read the details about the standard or download the PDF.
ASTM Classroom
Are you having trouble understanding the basics of ASTM?What is the difference between Code, Standard & Specification?
This video will walk you through:
References
Citation
When you need to include a fact or piece of information in an assignment or essay you should also include where and how you found that piece of information.That gives credibility to your paper and it is sometimes required in higher education.
To make your life (and citation) easier just copy & paste the information below into your assignment or essay:
Luz, Gelson. ASTM A437 Properties (Chem., Mech. & Rankings). Materials Blog. Gelsonluz.com. dd mmmm. yyyy. <URL>
Now replace dd, mmmm and yyyy with the day, month, and year you browsed this page. Also replace URL for the actual url of this page (The < and > stay, ok?). This citation format is based on MLA.
Other References
A962/A962M Specification for Common Requirements forBolting Intended for Use at Any Temperature from Cryogenic
to the Creep Range
E292 Test Methods for Conducting Time-for-Rupture Notch
Tension Tests of Materials
E112 Test Methods for Determining Average Grain Size
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