255 S32550 - ASTM A554-2016

Grade	255
USA UNS	S32550
Corresponding Standard	ASTM A554-2016 Welded Stainless Steel Mechanical Tubing
Classification	Ferritic Stainless Steel

255 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N
Minimum Value	-	-	-	-	-	24	4.5	1.5	2.9	0.1
Maximum Value	0.04	1	1.5	0.04	0.03	27	6.5	2.5	3.9	0.25

255 Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
Annealing	≥760	≥550	≥15	≤297

1 Approximate Comparison Table Austenitic-Ferritic Stainless Steel

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

European Standard

ISC

CNS

JIS

ASTM/AISI

UNS

ISO

DIN EN/DIN

W-Nr.

NF EN/NF

Numerical Grade

03Cr25Ni6Mo3Cu2N

S25554

329J4L

SUS 329J4L

STS 329J4L

255

S32550

X2CrNiMoCuN 25-6-3

1.4507

X2CrNiMoCuN 25-6-3

1.4507

2 Approximate Comparison Table Austenitic-Ferritic Stainless Steel

China	United States	International Organization for Standardization		European Standard
ISC	UNS	ISO	Numerical Grade	Numerical Grade
S25554	S32550	X3CrNiMoCuN26-6-3-2	4507-325-50-X	1.4507

255 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"!