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双相不锈钢SAF 2205中的SAF代表什么各位大侠,经常会遇到双相不锈钢的...
来自 : bbs.hcbbs.com/for...php?mod=vi 发布时间:2021-03-25
Sandvik SAF 2507 is high-alloy super dupiex stinless steel for service under extremely corrosive conditions.
It is developed mainly for chloride containing environments like seawater and therefore, it contains high amounts of chromium, molybdenum and nitrogen.
SAF 2205
Sandvik SAF 2205 is a medium-alloy duplex stainless steel with high corrosion resistance.
This steel is the most widely used of the three. Continual development work for many years has lead to increased nitrogen and molybdenum contents, thus further improving the weldability and corrosion resestance.
SAF 2304
Sandvik SAF 2304 is a low-alloy duplex stainless steel. It contains no molybdunum and has lower nickel content than the other two. It is developed as a hihg-strength and low-cost alternative to the standard austenitic grades 304L and 316L.
CHEMICAL COMPOSITION (WEIGHT-%)
GradeCr Ni Mo N C Max Si Max Mn Max P Max S Max
SAF 2507 25 7 4 0.3 0.030 0.8 1.2 0.035 0.015
SAF 2205 22 5 3.2 0.18 0.030 1.0 2.0 0.030 0.015
SAF 2304 23 4.5 - 0.1 0.030 1.0 2.0 0.035 0.015
TYPE OF STEEL
SANDVIKUNS EN* W-Nr DIN AFNOR SS
SAF 2507 S32750 1.4410 - X2CrNiMoN25 7 4 - 2328
SAF 2205 S31803/S32205 1.4462 1.4462 X2CrNiMON22 5 3Z2CND 22-05-03 2377
SAF 2304 S32304 1.4362 1.4362 X2CrNiM23 4 Z2CN 23-04AZ 2327
★Valid for sheet / plate, strip, semi-finished products, bars, rodsand sections for general purposes (not for pressure purposes)
PRODUCT STANDARDS
Grade seamless and welded tube and pipe
FlangesFittings plate, sheet and stripBar forgins
SAF 2507 ASTM A789 /A790 ASTM A182 ASTM A182 ASTM A240 / EN 10088-2 ASTM A479 / EN 10088-3 ASTM A182
SAF 2205 ASTM A 789 / A790 /NF A49-217 ASTM A182 ASTM A182 /A815 ASTM A240 / EN 10088-2 ASTM A276 / A479/ EN10088-3 ASTM A182
SAF 2304 ASTM A789 / A790 - - EN10088-2 EN 10088-3 -
Minimun values for walll thicknesses 20 mm
SANDVIK
Grade Proof
strength
R
MPa
min
Tensile
strength
Rm
MPa
Elongation
A
%
minHardness
Vickers
average
SAF 2507 550 800~1000 25 290
SAF 2205 450 680~880 25 260
SAF 2304 400 600~820 25 230

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发布于 : 2021-03-25 阅读(0)
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