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Billets

Sandvik

321/321H-6R35Current Issue at: 09/03/2011 05:40:37 AM. Supersedes all previous editions

General description

Sandvik 6R35 is an austenitic, titanium-stabilised stainless chromium-nickel steel. It is suitable for wet-corrosive service but also hasgood mechanical strength at high temperatures.

Chemical composition (nominal) %

C Si Mn Pmax

Smax

Cr Ni Mo Others

0.05 0.4 1.3 0.030 0.015 17.5 10.5 - Ti>5x(C+N)

Standards

Sandvik Grade: 321/321H-6R35ASTM: 321UNS: s32100

EN: 1.4541W Nr.: 1.4541DIN: X 6 CrNiTi 18 10SS: 2337AFNOR: Z6CNT18-10

BS: 321S31

Product standards

EN 10088-3ASTM A-314Suitable for production of flanges etc. acc. to ASTM A-182

CertificatesStatus according to EN 10 204 3.1

Forms of supply

Sizes and tolerancesRound-cornered square, as well as round billets, are produced in a wide range of sizes according to the fo llowing tables. Larger sizes

offered on request.

Surface conditionsSquare billetsUnground, spot ground or fully ground condition.

Round billetsPeel turned or black condition.

Square billets

Sizemm

Tolerancemm

Lengthm

80 +/-2 4 - 6.3100, 114, 126, 140, 150 +/-3 4 - 6.3

160, 180, 195, 200 +/-4 4 - 6.3>200 - 350 +/-5 3 - 5.3Sizes and tolerances apply to the rolled/forged condition.

Peel turned round billets

Sizemm

Tolerancemm

Lengthm

75 - 200 (5 mm interval) +/-1 max 10>200 - 450 +/-3 3 - 8

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Unground round billetsSizemm

Tolerancemm

Lengthm

77 - 112 (5 mm interval) +/-2 max 10124, 134 +/-2 max 10127, 147, 157 +/-2 max 10142, 152, 163 +/-2 max 10168, 178, 188 +/-2 max 10

183, 193 +/-2 max 10

Other productsHollow bar

Welding wireCovered electrodes

Mechanical properties

Testing is performed on separately solution annealed and quenched test piece. The following figures apply to

material in the solution annealed and quenched condition.

At 20C (68F)Metric units

Proofstrength

Rp0.2a)

MPamin

Rp1.0a)

MPamin

TensilestrengthRmMPa

Elong.

Ab)

%min

Contr.

Z%min

HB

max

210 245 515-700 40 50 215

Imperial units

Proofstrength

Rp0.2a)

ksimin

Rp1.0a)

ksimin

TensilestrengthRmksi

Elong.

Ab)

%min

Contr.

Z%

min

HB

max30.5 35.5 75-101.5 40 50 215

1 MPa = 1 N/mm2

a)Rp0.2 and Rp1.0 correspond to 0.2% offset and 1.0% offset yield strength respectively.

b) Based on L0 = 5.65 S0 where L0 is the original gauge length and S0 the original cross-section area.

Impact strengthDue to its austenitic microstructure, Sandvik 6R35 has very good impact strength both at room temperature andat cryogenic temperatures.

Tests on bar have demonstrated that the steel fulfils the requirements (60 J (44 ft-lb) at -196

o

C (-320

o

F))according to the European standards prEN13445-2(UFPV-2) and EN 10272.

At high temperatures

Metric unitsTemperatureC

Proof strengthRp.02MPamin.

Rp1.0MPamin.

Tensile strengthRmMPamin.

100

200300400500

175

155135125119

205

185167156149

440

390375375360

Imperial unitsTemperatureF

Proof strengthRp.02ksimin.

Rp1.0ksimin.

Tensile strengthRmksimin.

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200400600800

1000

25.422.519.618.1

17.2

29.726.824.222.5

21.6

63.856.654.454.4

52.2

Further information

Our data sheets and in-depth technical information about our grades and products are available on the Sandvik Materials Technologyweb-site www.smt.sandvik.com. The following printed matter can be ordered via the web or from the nearest Sandvik office.

S-028

S-030

S-0301

S-110

S-236

Metallurgy and long products division

Semi-finished products

Billets for forging

Stainless pipe-tube-hollow bar, seamless standard programme

Stainless welding products

Disclaimer

-------------------------------------------------------------------------------------------------------------------------------Recommendations are for guidance only, and the suitability o f a material for a specific application can be confirmed only when we knowthe actual service conditions. Continuous development may necessitate changes in technical data without notice.

This data sheet is only valid for Sandvik material. Other material, covering the same international specifications, does not necessarilycomply with the mechanical and corrosion properties presented in this datasheet.

A document from the Sandvik Materials Technology web-site.

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