12560H - MIL A 12560H-1990

Grade	12560H
Corresponding Standard	MIL A 12560H-1990 Armor plate , steel, wrought, homogeneous (for use in combat-vehicles and for ammunition testing)
Classification	Alloy Steel

12560H Chemical Element Composition Content (%)

	Component	C	P	S	Ni	Cu ^*	As ^*	Ti ^*	Zr ^*	Pb	Al ^*	Sn ^*	Sb ^*
thick≤2in	Minimum Value	-	-	-	-	-	-	-	-	-	-	-	-
thick≤2in	Maximum Value	0.3	0.025	0.015	0.5	0.25	0.02	0.1	0.1	0.01	0.1	0.02	0.02

	Component	C	P	S	Ni	Cu ^*	As ^*	Ti ^*	Zr ^*	Pb	Al ^*	Sn ^*	Sb ^*
thick 2in.~4in.	Minimum Value	-	-	-	-	-	-	-	-	-	-	-	-
thick 2in.~4in.	Maximum Value	0.33	0.025	0.015	0.5	0.25	0.02	0.1	0.1	0.01	0.1	0.02	0.02

	Component	C	P	S	Ni	Cu ^*	As ^*	Ti ^*	Zr ^*	Pb	Al ^*	Sn ^*	Sb ^*
thick＞4in.	Minimum Value	-	-	-	-	-	-	-	-	-	-	-	-
thick＞4in.	Maximum Value	0.35	0.025	0.015	0.5	0.25	0.02	0.1	0.1	0.01	0.1	0.02	0.02

• Mn≤1%，maximum range precent 0.3；Mn＞1%，maximum range precent 0.4%.
• Si≤0.6%，maximum range precent: 0.2；0.6%＜Si≤1%，maximum range precent: 0.3；Si＞1%，maximum range precent: 0.4
• Cr≤1.25%，maximum range precent: 0.3；Cr＞1.25%，maximum range precent: 0.4.
• Mo≤0.2%，maximum range precent: 0.07；Mo＞0.2%，maximum range precent: 0.15.
• V maximum range precent: 0.1
• This table lists the maximum range for elements of the manufacturer’s established chemical composition.
• When the amount of boron is specified in the alloy, its content so determined by heat analysis shall not exceed 0.003 percant
• When the amount of an element i6 less than 0.02 percent the analysis may be reported as 0.02 percent

12560H Mechanical Properties

thickness t mm	Mark	Hardness HBW
0.25≤t≤0.499	Class 1&3	Brinell indentation diameter 3.3~3.1mm BHN: 341~388 HRC: 36.6~41.8
0.5≤t≤0.749	Class 1&3	Brinell indentation diameter 3.35~3.15mm BHN: 331~375 HRC: 35.4~40.5
0.75≤t≤1.249	Class 1&3	Brinell indentation diameter 3.4~3.15mm BHN: 321~375 HRC: 34.3~40.5
1.25≤t≤1.99	Class 1&3	Brinell indentation diameter 3.55~3.35mm BHN: 293~331 HRC: 30.9~35.4
2≤t≤3.99	Class 1&3	Brinell indentation diameter 3.7~3.45mm BHN: 269~311 HRC: 27.7~33
4≤t≤6	Class 1&3	Brinell indentation diameter 3.9~3.65mm BHN: 241~277 HRC: 22.7~28.7
6≤t≤6.999	Class 3	Brinell indentation diameter 3.9~3.65mm BHN: 241~277 HRC: 22.7~28.7
7≤t≤8.999	Class 3	Brinell indentation diameter 4.05~3.75mm BHN: 223~262 HRC: 19.2~26.7
9≤t≤12	Class 3	Brinell indentation diameter 4.15~3.85mm BHN: 212~248 HRC: 16.4~24.2
0.25≤t≤1.25	Class 2	Brinell indentation diameter 3.65~3.4mm BHN: 277~321 HRC: 28.7~34.3

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!