420 Stainless Steel Bar
420 Stainless Steel Bar

420 Stainless Steel Bar

420 is a hardenable martensitic stainless steel that contains at least 12% chromium, just enough to provide corrosion resistance. It has good ductility in the annealed condition, but can be hardened to a minimum Rockwell hardness of 50 HRC, which is the highest hardness in the 12% chromium scale. Due to its hardening properties, 420 are not often welded, although this is possible. Martensitic stainless steel is designed for high hardness, and sometimes other properties will be affected to a certain extent. The corrosion resistance is lower than that of ordinary austenite grades, and its effective operating range is limited by its ductility loss at sub-zero temperatures and strength loss due to excessive tempering at high temperatures. The best corrosion resistance is obtained when the metal is hardened and subjected to surface grinding or polishing.

Classification :

Stainless Steel Bar

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E-mail : sales13@jiugangsteelgroup.com

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PRODUCT DETAILS

420 Stainless Steel Bar Description

420 is a hardenable martensitic stainless steel that contains at least 12% chromium, just enough to provide corrosion resistance. It has good ductility in the annealed condition, but can be hardened to a minimum Rockwell hardness of 50 HRC, which is the highest hardness in the 12% chromium scale. Due to its hardening properties, 420 are not often welded, although this is possible. Martensitic stainless steel is designed for high hardness, and sometimes other properties will be affected to a certain extent. The corrosion resistance is lower than that of ordinary austenite grades, and its effective operating range is limited by its ductility loss at sub-zero temperatures and strength loss due to excessive tempering at high temperatures. The best corrosion resistance is obtained when the metal is hardened and subjected to surface grinding or polishing.


Product Parameters

Product Name                           

420 Stainless Steel Bar

Type

Steel Bar

Outer Diameter

Round Bar

4mm-500mm

Hexagon Bar

18mm-57mm (11/16″ to 2-3/4″)

Square Bar

18mm-47mm (11/16″ to 1-3/4″)

Flat Steel

1/2 "to 10", Thickness: 2mm-150mm, Can provide customized

Length

1-6 meters, Length can be customized

Standard

ASTM, AISI, JIS, GB, DIN, EN, etc.

Surface

Black, Bright Polished, Rough Turning, Mattness Surface Treatment, No. 4. BA, etc.

Scope of Application

Stainless steel bars are used in a variety of industries such as shipbuilding,

Defense, Automotive, Textiles, Paper and pulp, Manufacturing, Cement,

Heavy earthmoving equipment and construction, etc.

 

Chemical Composition

C

Si

Mn

Cr

S

P

≤ 0.15

≤1.0

≤1.0

12.0～14.0

≤ 0.03

≤ 0.04

 

Mechanical Properties

Tensile Strength Kb (MPa)

Yield Strength σ0.2 (MPa)

Elongation D5 (%)

Hardness

≥634

≥440

≥20

Annealing≤ 223HB; quenching and tempering ≥ 192HB

 

Physical Performance

Density(g/cm³)

Modulus of Elasticity(Gpa)

Coefficient of Thermal Expansion(10-6/°C)

Coefficient of Thermal Conductivity(W/m*K)

Resistivity(ΜΩ. cm)

7.74

200

10.2

24.9

55

Factory Appearance

 

 

No

 China Japan USA South Korea Germany India Australia Taiwan, China

 

GB

JIS

ASTM

UNS

KS

DIN

BIS

AS

CNS
Austenitic stainless steel

1

12Cr17Mn6Ni5N

SUS201

201

S20100

STS201

1.4372

10Cr17Mn6Ni4N20

201-2

201

2

12Cr18Mn9Ni5N

SUS202

202

S20200

STS202

1.4373

-

-

202

3

12Cr17Ni7

SUS301

301

S20200

STS301

1.4319

10Cr17Ni7

301

301

4

06Cr19Ni10

SUS304

304

S30400

STS304

1.4301

07Cr18Ni9

304

304

5

022Cr19Ni10

SUS304L

304L

S30403

STS304L

1.4306

02Cr18Ni11

304L

304L

6

06Cr19Ni10N

SUS304N1

304N

S30451

STS304N1

1.4315

-

304N1

304N1

7

06Cr19Ni9NbN

SUS304N2

XM21

S30452

STS304N2

-

-

304N2

304N2

8

022Cr19Ni10N

SUS304LN

304LN

S30453

STS304LN

-

-

304LN

304LN

9

10Cr18Ni12

SUS305

305

S30500

STS305

1.4303

-

305

305

10

06Cr23Ni13

SUS309S

309S

S30908

STS309S

1.4833

-

309S

309S

11

06Cr25Ni20

SUS310S

310S

S31008

STS310S

1.4845

-

310S

310S

12

06Cr17Ni12Mo2

SUS316

316

S31600

STS316

1.4401

04Cr17Ni12Mo2

316

316

13

06Cr17Ni12Mo2Ti

SUS316Ti

316Ti

S31635

-

1.4571

04Cr17Ni12MoTi20

316Ti

316Ti

14

022Cr17Ni12Mo2

SUS316L

316L

S31603

STS316L

1.4404

~02Cr17Ni12Mo2

316L

316L

15

06Cr17Ni12Mo2N

SUS316N

316N

S31651

STS316N

-

-

316N

316N

16

022Cr17Ni13Mo2N

SUS316LN

316LN

S31653

STS316LN

1.4429

-

316LN

316LN

17

06Cr18Ni12Mo2Cu2

SUS316J1

-

-

STS316J1

-

-

316J1

316J1

18

022Cr18Ni14Mo2Cu2

SUS316J1L

-

-

STS316J1L

-

-

-

316J1L

19

06Cr19Ni13Mo3

SUS317

317

S31700

STS317

-

-

317

317

20

022Cr19Ni13Mo3

SUS317L

317L

S31703

STS317L

1.4438

-

317L

317L

21

06Cr18Ni11Ti S

SUS321

321

S32100

STS321

1.4541

04Cr18Ni10Ti20

321

321

22

06Cr18Ni11Nb

SUS347

347

S34700

STS347

1.4550

04Cr18Ni10Nb40

347

347
Duplex stainless steel

1

-

SUS329J1

329

S32900

STS329J1

1.4477

-

329J1

-

2

022Cr23Ni5Mo3N

-

S32205

F60

-

1.4462

-

2205

2205

3

022Cr25Ni7Mo4N

-

S32750

F53

-

1.4410

-

2507

2507
Ferritic stainless steel

1

06Crl3Al

SUS405

405

S40500

STS405

1.4002

04Cr13

405

405

2

022Cr11Ti

SUH409

409

S40900

STS409

1.4512

-

409L

409L

3

022Cr12

SUS410L

-

-

STS410L

-

-

410L

410L

4

10Cr17

SUS430

430

S43000

STS430

1.4016

05Cr17

430

430

5

10Cr17Mo

SUS434

434

S43400

STS434

1.4113

-

434

434

6

022Cr18NbTi

-

-

S43940

-

1.4509

-

439

439

7

019Cr19Mo2NbTi

SUS444

444

S44400

STS444

1.4521

-

444

444
Martensitic stainless steel

1

12Cr12

SUS403

403

S40300

STS403

-

-

403

403

2

12Cr13

SUS410

410

S41000

STS410

1.4006

12Cr13

410

410

3

20Cr13

SUS420J1

410

S42000

STS420J1

1.4021

20Cr13

420

420J1

4

30Cr13

SUS420J2

-

-

STS420J2

1.4028

30 Cr13

420J2

420J2

5

68Cr17

SUS440A

440A

S44002

STS440A

-

-

440A

440A

 

Packing and delivery

 In addition to independent production, the company has also signed annual sales contracts with major steel mills. The company has sufficient inventory and complete variety specifications.

QUALITY INSPECTION

Its metal products are known for their high strength, corrosion resistance and stable precision. They are widely used in construction, machinery, electricity and other fields. The qualified rate of random inspections by third-party authoritative organizations is 100%, winning long-term trust from customers.

QUALITY INSPECTION

APPLICATION FIELD

Bridge

Bridge

Oil pipeline

Oil pipeline

Chemical industry

Chemical industry

Steel structure

Steel structure

FAQ

How can we guarantee quality?

How can we guarantee quality?

Always a pre-production sample before mass production;</br> Always final Inspection before shipment;</br> Please feel free to leave us message if you have any question about us and our products.
Always a pre-production sample before mass production;
Always final Inspection before shipment;
Please feel free to leave us message if you have any question about us and our products.
How long is your delivery time?

How long is your delivery time?

Generally speaking, our delivery time is within 15-45 days, if the demand is particularly large or there are special circumstances, the delivery time may be delayed.
Generally speaking, our delivery time is within 15-45 days, if the demand is particularly large or there are special circumstances, the delivery time may be delayed.
Can we visit your factory?

Can we visit your factory?

Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.
Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.
About the product price?

About the product price?

Due to the cyclical changes in raw material prices, prices vary from period to period. You can consult us, you can communicate with us online through the platform, WeChat, WhatsApp and other platforms, and we will reply within 24 hours. Please give us your requirements and specifications (steel grade, size, quantity, destination port), and we will work out the best price at the first time.
Due to the cyclical changes in raw material prices, prices vary from period to period. You can consult us, you can communicate with us online through the platform, WeChat, WhatsApp and other platforms, and we will reply within 24 hours. Please give us your requirements and specifications (steel grade, size, quantity, destination port), and we will work out the best price at the first time.
Can you arrange the shipment?

Can you arrange the shipment?

Sure, we have permanent freight forwarder who can gain the best price from most ship company and offer professional service.
Sure, we have permanent freight forwarder who can gain the best price from most ship company and offer professional service.
Can you provide sample?

Can you provide sample?

Yes, for regular sizes sample is free but buyer need to pay freight cost.
Yes, for regular sizes sample is free but buyer need to pay freight cost.

Stainless Steel Bar

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