- ASTM A684/A684M-2025

SAE Steel Number	1070
Corresponding Standard	ASTM A684/A684M-2025 Standard Specification for Steel, Strip, High-Carbon, Cold-Rolled
Classification	Carbon Steel

Chemical Element Composition Content (%)

Component	C	Mn	P	S	Cr ^{② ③}	Ni ^②	Cu ^②	Mo ^②	More
Minimum Value	0.65	0.6	-	-	-	-	-	-	Type 1：Si 0.15~0.30 Type 2：Si≤0.10 ①
Maximum Value	0.75	0.9	0.03	0.035	0.25	0.3	0.3	0.1	Type 1：Si 0.15~0.30 Type 2：Si≤0.10 ①

* There is no specified limit on aluminum, vanadium, niobium, and titanium, but the analysis shall be reported.
① When agreed by purchaser and supplier, other silicon ranges are permissible.
② The sum of copper. nickel, chromium, and molybdenum shall not exceed 0.80 % on heat analysis. When one or more of these elements is specified, the sum does not apply, in which case only the individual limits on the remaining elements will apply. The maximum content of Cu can also reach 0.50%, Cr can also reach 0.30%, and Mo can also reach 0.16%.
③ When the chromium is specified or added for antigraphitization, the maximum shall be 1.40%.

1 Approximate Comparison Table Spring Steel

China		United States		International Organization for Standardization	France	Russia	Sweden	United Kingdom
GB	ISC	AISI	UNS	ISO	NF EN/NF	GOST	SS₁₄	BS EN/BS
70	U20702	1070	G10700	Type DC	XC70	70	1778	070A72

2 Approximate Comparison Table Wrought Aluminum and Aluminum Alloy

China	Japan	United States		International Organization for Standardization		Germany		European Standard	Russia
GB	JIS	ASTM	UNS	ISO	Numerical Grade	DIN EN/DIN	W-Nr.	EN	GOST
1070	1070 A91070	1070	A91070	Al99.7	A91070	Al99.7	3.0275 A91070	EN-AW-Al99.7	АД00Е

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