070M20 - BS 970-3-1991

Grade	070M20
Corresponding Standard	BS 970-3-1991 Specification for wrought steel for machanical and allied engineering purposes part 3:bright bars for general engineering purposes
Classification	Carbon Steel

070M20 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr ^*	Ni ^*	Mo ^*
Minimum Value	0.16	0.1	0.5	-	-	-	-	-
Maximum Value	0.24	0.4	0.9	0.05	0.05	0.3	0.4	0.15

• For older grades of stainless steel, see Table 2 of standard BS 970-4-1970

070M20 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW	Impact Energy Absorption KV2 J
6≤d≤150	Normalizing + Turning or Grinding	≥430	≥215	≥21	126~179	-
150＜d≤250	Normalizing + Turning or Grinding	≥400	≥200	≥21	116~170	-
6≤d≤13	Hot Rolling + Cold Drawing or Hot Rolling + Cold Drawing + Grinding	≥560	≥440	≥10	-	-
13＜d≤16	Hot Rolling + Cold Drawing or Hot Rolling + Cold Drawing + Grinding	≥530	≥420	≥12	-	-
16＜d≤40	Hot Rolling + Cold Drawing or Hot Rolling + Cold Drawing + Grinding	≥490	≥370	≥12	-	-
40＜d≤63	Hot Rolling + Cold Drawing or Hot Rolling + Cold Drawing + Grinding	≥480	≥355	≥13	-	-
63＜d≤76	Hot Rolling + Cold Drawing or Hot Rolling + Cold Drawing + Grinding	≥450	≥325	≥14	-	-

1 Approximate Comparison Table

China

Taiwan, China

Japan

South Korea

United States

Germany

France

Russia

Sweden

United Kingdom

ISC

CNS

JIS

ASTM/AISI

UNS

DIN EN/DIN

W-Nr.

NF EN/NF

GOST

BS EN/BS

U20202

S20C

SM20C

1020

G10200

C22E
Ck22

1.1151

C22E
XC18

1435

C22E
070M20

2 Approximate Comparison Table

China	Japan	United States	International Organization for Standardization	Germany		European Standard		Russia	Sweden	United Kingdom
GB	JIS	SAE	ISO	DIN EN/DIN	W-Nr.	EN	Numerical Grade	GOST	SS	BS EN/BS
20	S20C S22C	1020	C25	C22	1.0402	C22	1.0402	20	1450	070M20

3 Approximate Comparison Table

070M20 Corresponding Standards(Same grade name, different standards)

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