Chemical Composition Base Element Fe (Iron) Ag (Silver) Al (Aluminum) As (Arsenic) Au (Gold) B (Boron) Be (Beryllium) Bi (Bismuth) C (Carbon) 0.25 to 0.35 % Ca (Calcium) Cd (Cadmium) Ce (Cerium) Co (Cobalt) Cr (Chromium) Cu (Copper) Fe (Iron) 97.9 to 98.2 % (estimate) Ga (Gallium) Hf (Hafnium) In (Indium) Li (Lithium) Mg (Magnesium) Mn (Manganese) 1 to 1.25 % Mo (Molybdenum) 0.2 to 0.25 % N (Nitrogen) Na (Sodium) Nb (Niobium) Ni (Nickel) P (Phosphorus) Pb (Lead) Pd (Palladium) Pt (Platinum) S (Sulfur) Sb (Antimony) Se (Selenium) Si (Silicon) 0.3 % Sn (Tin) Sr (Strontium) Ta (Tantalum) Te (Tellurium) Th (Thorium) Ti (Titanium) Tl (Thallium) V (Vanadium) W (Tungsten) Zn (Zinc) Zr (Zirconium) Balance Fe (Iron) Others Total Others Each Other elements Other elements_old Composition Note Fe is listed as a Balance element for this material, but its % value is not listed in the specification. The value shown is a calculated one. Composition Note_old Fe is listed as a Balance element for this material, but its % value is not listed in the specification. The value shown is a calculated one. Mechanical Properties Tabular Data Yield Strength 448 to 1260 MPa Ultimate Tensile Strength 621 to 1450 MPa Elongation 7 to 25 % strain Density Brinell Hardness 196 to 480 Vickers Hardness Rockwell Hardness C scale Rockwell Hardness B scale Rockwell Hardness A scale Rockwell 30-T scale Rockwell 15-T scale Notes on Mechanical Properties Other Information Material Class Ferrous Alloy Alloy Family Alloy Group Alloy Sub-Group Country USA Standards Body Description_old Heat treated: 90,000-210,000 TS; 65,000-183,000 YS; 7-25 El; 25-55 RA; 196-480 HB; For power shovels, tractor tread steel, mine car wheels; resists shock and wear; IZ-3-56. Alternate Name Designation BF-MM Specification Specification Year Specification Status Obsolete Specification Status Notes Similar US Grade Specification Type Manufacturer's Specification Similar UNS Number Source Woldman's Engineering Alloys 9th ed. J. Frick Editor, ASM International 2000 Online Source Organization Available forms Wrought Similar Alloys Click here to find similar alloys Links Organizations Bonney-Floyd Co.
No warranty is given for the accuracy of these data Copyright © 2024 ASM International®

Chemical Composition

Base Element

Fe (Iron)

Ag (Silver)

Al (Aluminum)

As (Arsenic)

Au (Gold)

B (Boron)

Be (Beryllium)

Bi (Bismuth)

C (Carbon)

0.25 to 0.35

Ca (Calcium)

Cd (Cadmium)

Ce (Cerium)

Co (Cobalt)

Cr (Chromium)

Cu (Copper)

Fe (Iron)

97.9 to 98.2

% (estimate)

In (Indium)

1 to 1.25

0.2 to 0.25

Na (Sodium)

Ni (Nickel)

Pb (Lead)

S (Sulfur)

0.3

Sn (Tin)

Zn (Zinc)

Balance

Fe (Iron)

Others Each

Fe is listed as a Balance element for this material, but its % value is not listed in the specification. The value shown is a calculated one.

Composition Note_old

Fe is listed as a Balance element for this material, but its % value is not listed in the specification. The value shown is a calculated one.

Mechanical Properties

Tabular Data

Yield Strength

448 to 1260

MPa

Ultimate Tensile Strength

621 to 1450

MPa

Elongation

7 to 25

% strain

Density

Brinell Hardness

196 to 480

Vickers Hardness

Rockwell Hardness C scale

Rockwell Hardness B scale

Rockwell Hardness A scale

Rockwell 30-T scale

Rockwell 15-T scale

Notes on Mechanical Properties

Other Information

Material Class

Ferrous Alloy

Alloy Family

Alloy Group

Alloy Sub-Group

Country

USA

Standards Body

Description_old

Heat treated: 90,000-210,000 TS; 65,000-183,000 YS; 7-25 El; 25-55 RA; 196-480 HB; For power shovels, tractor tread steel, mine car wheels; resists shock and wear; IZ-3-56.