Stainless Steel不鏽鋼

Stainless steel resists corrosion well, is easy to form, lasts a long time, and looks good. It is widely used in consumer electronics, machinery, tableware, construction, kitchenware, vehicles, aerospace, and medical fields, and it is an essential metal in daily life.

SummarySursun Metals supplies cold-rolled stainless steel coil and sheet in grades such as 301, 304, 316, 410, 420J2, and 430. For high hardness and springs, choose 301. For general corrosion resistance choose 304. For higher corrosion resistance choose 316 (contains molybdenum, used in medical applications). For an economical choice choose 430. For knives choose 410 or 420J2.

Grades at a Glance

Select a grade to jump to its details.

Stainless steel grades supplied by Sursun Metals
Grade	Characteristics	Main uses	Supply status	Thickness supplied
301	Austenitic stainless steel with excellent corrosion resistance and workability	Springs, construction, medical devices, computer part brackets	Hard temper 1/2H, 3/4H, H, EH, SEH	From 0.05 mm
304	Austenitic stainless steel with excellent corrosion resistance and workability	Containers, construction, vehicles, medical, food, chemical	Soft temper (surface 2B, BA)	From 0.10 mm
304	Austenitic stainless steel with excellent corrosion resistance and workability	Spring materials, construction, vehicles, medical, food, chemical	Hard temper 1/2H, 3/4H, H	From 0.04 mm
316	Austenitic stainless steel containing molybdenum (Mo 2.00–3.00%, see composition table), with excellent corrosion resistance and workability	Photographic equipment, tableware, construction, jet engines, boilers, etc.	Soft temper (surface 2B)	From 0.2 mm
430	Ferritic stainless steel with excellent corrosion resistance	Kitchenware, cookware and tableware, LED frames, computer peripherals	Soft temper (surface 2B, BA)	From 0.2 mm
410	Martensitic stainless steel	Knives, industrial parts, etc.	Soft temper (surface 2B)	Please contact us
420J2	Martensitic stainless steel with excellent corrosion resistance, which can be quenched and tempered	Knives, springs, construction, vehicle parts	Soft temper (surface 2B)	From 0.4 mm

When you ask for a quote, please tell us the material (grade), thickness, width, required coil weight or length, and quantity. If your material is not listed, contact us.

Choosing a Grade by Need

If you are not sure which to choose, start by matching your needs below.

Choose a grade by use
Need	Suggested grade
General corrosion resistance, general use	304
Higher corrosion resistance needed (contains molybdenum, medical use)	316
Economical (kitchenware, cookware and tableware)	430
Knives	410, 420J2
High hardness, springs	301 (hard temper)

For fuller grade comparisons and FAQ, see Stainless Steel Knowledge.

Details by Grade

Actual composition and properties are as stated on the mill test certificate for each batch.

AusteniticGood corrosion resistance and workability

Stainless steel 301

CNS standard: CNS 8499
Characteristics: Austenitic stainless steel with excellent corrosion resistance and workability
Main uses: Springs, construction, medical devices, computer part brackets
Supply status: Hard temper 1/2H, 3/4H, H, EH, SEH
Thickness supplied: From 0.05 mm

Source: CNS 8499 (2016), cold-rolled stainless steel plates, sheets and strips

301 chemical composition (unit: %)
C	Si	Mn	P	S	Ni	Cr	Mo	Cu	N
≤0.15	≤1.00	≤2.00	≤0.045	≤0.030	6.00–8.00	16.00–18.00	—	—	—

Mechanical Properties

1/2H, 3/4H, H

301 hard temper mechanical properties
Temper	Hardness HV (reference)	Tensile strength N/mm²	Elongation %, thickness 0.30–<0.40 mm	Thickness 0.40–<0.80 mm	Thickness ≥0.80 mm
1/2H	310–370	≥1,030	≥9	≥10	≥10
3/4H	370–430	≥1,210	≥3	≥5	≥7
H	430–490	≥1,270	≥3	≥4	≥5

EH, SEH

301 EH, SEH hardness
Temper	Hardness HV (reference)
EH	490–530
SEH	530 and above

Hardness values are for reference.

Stainless steel 304

CNS standard: CNS 8499
Characteristics: Austenitic stainless steel with excellent corrosion resistance and workability
Main uses (soft temper): Containers, construction, vehicles, medical, food, chemical
Main uses (hard temper): Spring materials, construction, vehicles, medical, food, chemical
Supply status: Soft temper (surface 2B, BA)
Hard temper 1/2H, 3/4H, H
Thickness supplied: Soft temper: from 0.10 mm
Hard temper: from 0.04 mm

Source: CNS 8499 (2016), cold-rolled stainless steel plates, sheets and strips

304 chemical composition (unit: %)
C	Si	Mn	P	S	Ni	Cr	Mo	Cu	N
≤0.08	≤1.00	≤2.00	≤0.045	≤0.030	8.00–10.50	18.00–20.00	—	—	—

Mechanical Properties

Soft temper

304 soft temper mechanical properties
Tensile strength N/mm²	Elongation %	HBW	HRBS/HRBW	HV
≥520	≥40	≤187	≤90	≤200

Hard temper

304 hard temper hardness
Temper	Hardness HV (reference)
1/2H	250–310
3/4H	310–370
H	370 and above

Hardness values are for reference.

Stainless steel 316

CNS standard: CNS 8499
Characteristics: Austenitic stainless steel containing molybdenum (Mo 2.00–3.00%, see composition table), with excellent corrosion resistance and workability
Main uses: Photographic equipment, tableware, construction, jet engines, boilers, etc.
Supply status: Soft temper (surface 2B)
Thickness supplied: From 0.2 mm

Source: CNS 8499 (2016), cold-rolled stainless steel plates, sheets and strips

316 chemical composition (unit: %)
C	Si	Mn	P	S	Ni	Cr	Mo	Cu	N
≤0.08	≤1.00	≤2.00	≤0.045	≤0.030	10.00–14.00	16.00–18.00	2.00–3.00	—	—

Mechanical Properties

316 soft temper mechanical properties
Tensile strength N/mm²	Elongation %	HBW	HRBS/HRBW	HV
≥520	≥40	≤187	≤90	≤200

Hardness values are for reference.

FerriticCorrosion resistant, economical

Stainless steel 430

CNS standard: CNS 8499
Characteristics: Ferritic stainless steel with excellent corrosion resistance
Main uses: Kitchenware, cookware and tableware, LED frames, computer peripherals
Supply status: Soft temper (surface 2B, BA)
Thickness supplied: From 0.2 mm

Source: CNS 8499 (2016), cold-rolled stainless steel plates, sheets and strips

430 chemical composition (unit: %)
C	Si	Mn	P	S	Cr	Mo	N
≤0.12	≤0.75	≤1.00	≤0.040	≤0.030	16.00–18.00	—	—

Mechanical Properties

430 soft temper mechanical properties
Tensile strength N/mm²	Elongation %	HBW	HRBS/HRBW	HV
≥420	≥22	≤183	≤88	≤200

Hardness values are for reference.

MartensiticCan be hardened by heat treatment

Stainless steel 410

CNS standard: CNS 8499
Characteristics: Martensitic stainless steel
Main uses: Knives, industrial parts, etc.
Supply status: Soft temper (surface 2B)
Thickness supplied: Please contact us

Source: CNS 8499 (2016), cold-rolled stainless steel plates, sheets and strips

410 chemical composition (unit: %)
C	Si	Mn	P	S	Cr
≤0.15	≤1.00	≤1.00	≤0.040	≤0.030	11.50–13.50

Mechanical Properties

410 soft temper mechanical properties
Tensile strength N/mm²	Elongation %	HBW	HRBS/HRBW	HV
≥440	≥20	≤201	≤93	≤210

Hardness values are for reference.

Stainless steel 420J2

CNS standard: CNS 8499
Characteristics: Martensitic stainless steel with excellent corrosion resistance, which can be quenched and tempered
Main uses: Knives, springs, construction, vehicle parts
Supply status: Soft temper (surface 2B)
Thickness supplied: From 0.4 mm

Source: CNS 8499 (2016), cold-rolled stainless steel plates, sheets and strips

420J2 chemical composition (unit: %)
C	Si	Mn	P	S	Cr
0.26–0.40	≤1.00	≤1.00	≤0.040	≤0.030	12.00–14.00

Mechanical Properties

420J2 soft temper mechanical properties
Tensile strength N/mm²	Elongation %	HBW	HRBS/HRBW	HV
≥540	≥18	≤235	≤99	≤247

Hardness values are for reference.

How to Read Soft Temper, Hard Temper, and Surface Finish

Temper and surface symbols
Symbol	Description
Soft temper	Condition after cold rolling and heat treatment (solution treatment or annealing). The hardness is lower.
Hard temper (1/2H, 3/4H, H, EH, SEH)	Cold-rolled to a controlled reduction (temper rolled) to reach a set hardness. Hardness rises step by step and is shown in HV.
2B	Cold-rolled, heat-treated, pickled, then given a light cold roll for a moderately bright surface. A common surface for soft temper.
BA	A bright surface made by bright annealing after cold rolling.

Questions about stainless steel quotes or materials

Please contact Sursun Metals

02-2206-8688Phone Email

Stainless Steel Knowledge and FAQ →Questions including: What is the difference between 304 and 316? What are hard and soft temper? Which stainless steel is magnetic? What is the difference between 410 and 420J2?