Countries stainless steel valve steel number implementation standard control steel valve main parts material table
321 stainless steel valve equivalent to domestic 1Cr17Ni9Ti,321 stainless steel valve performance is very similar to 304, but because of the addition of titanium metal, so that it has better resistance to grain boundary corrosion and high temperature strength. Due to the addition of titanium metal, it effectively controls the formation of chromium carbide. The 321 stainless steel valve has a better Stress Rupture performance and a higher temperature Creep Resistance in both stress and mechanical properties than the 304 stainless steel valve. 321 Stainless steel valves are used for high resistance to grain boundary corrosion
Stainless steel valve main performance purposes
304 stainless steel valve GB 0Cr18Ni9, GB 0Cr18Ni9 as a purpose of stainless steel valve, has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; Stamping, bending and other hot processing good, no heat treatment hardening phenomenon (no magnetic, using temperature -196¡æ~800¡æ).
321 stainless steel valve equivalent to domestic 1Cr17Ni9Ti,321 stainless steel valve performance is very similar to 304, but because of the addition of titanium metal, so that it has better resistance to grain boundary corrosion and high temperature strength. Due to the addition of titanium metal, it effectively controls the formation of chromium carbide. The 321 stainless steel valve has a better Stress Rupture performance and a higher temperature Creep Resistance in both stress and mechanical properties than the 304 stainless steel valve. 321 Stainless steel valve is used in high grain boundary corrosion resistance of chemical, coal, petroleum industry in the field of open heat resistant pipeline and heat treatment is difficult pipeline.
316 stainless steel valve GB 0Cr17Ni12Mo2 0Cr17Ni12Mo2, due to the addition of Mo, so its corrosion resistance, atmospheric corrosion resistance and high temperature strength is particularly good, can be used under harsh conditions; 316 stainless steel valves used in: seawater, chemical, dye, paper, oxalic acid, fertilizer and other production equipment;
316L stainless steel valve GB 00Cr17Ni14Mo2 00Cr17Ni14Mo2, as 316L stainless steel valve in addition to the 316 stainless steel valve has the same characteristics, its grain boundary corrosion resistance is better than 316; In addition, the addition of molybdenum element can significantly improve its resistance to intergranular corrosion and oxide stress corrosion, and reduce the hot cracking tendency during welding. 316L stainless steel valve is used in: often used in pure water, distilled water, medicine, sauce, vinegar and other health requirements, medium corrosion performance is strong occasions, 316 stainless steel valve special use against grain boundary corrosion has special requirements of products.
310S stainless steel valve is a standard method of stainless steel valve in the United States, the domestic label is (2520) 0Cr25Ni20, is a kind of austenitic stainless steel valve, the S in 310S refers to the special use of the stainless steel valve. 0Cr25Ni20 (310S) characteristics — high temperature oxidation resistance, high temperature strength. Use – exhaust pipe Bellows, microwave oven Heater,Tube, high temperature furnace bladder, cremation furnace and other requirements of heat resistance of stainless steel valves.
Usually ** often see 304, 316 stainless steel valve is such, 304 standard component is 18% chromium plus 8% nickel, that is generally known as 18-8 stainless steel valve. The characteristics of this kind of stainless steel valve are non-magnetic, can not be changed by heat treatment method of metallography structure, good processing, and because of the alloy element – nickel, so the corrosion resistance is better than only containing chromium (no nickel) of the other two types of stainless steel valves.
The main uses of 300 series stainless steel valves are: generally used in petroleum, chemical, pharmaceutical, chemical fertilizer, electric power and other industries of various working conditions on the pipeline. In the minds of ordinary people, the so-called stainless steel valve refers to 300 stainless steel valves (especially 304 stainless steel valves).
Steel valve main parts Material table (a) Steel valve main parts Material table (a) part name Material name brand standard number Valve bracket opening and closing parts carbon cast steel WCA, WCB, WCCGB/T 12229 quality carbon steel 20, 25, 30, 35GB/T 699 high-temperature steel ZC1Cr5Mo, ZG20CrMoV, ZG15CrMo1VZBJC8015…
Steel valve main parts material table (I)
Name of Part
material
The name of the
brand
Standard no.
The valve body
The cover
stents
Open and close piece
Carbon cast steel parts
WCA, WCB, WCC
GB/T 12229
Quality carbon steel
20, 25, 30, 35
GB/T 699
High temperature steel
ZC1Cr5Mo, ZG20CrMoV, ZG15CrMo1V
ZBJC8015
WC1, WC5, WC6, and WC9
GB/T 5263
1Cr5Mo
GB/T 1221
12CrMoV, 12Cr1MoVA
GB/T 3077
Low temperature steel
ZGOCr18Ni, ZG1Cr18Ni9
ZGOCr18Ni9Ti, ZG1Cr18Ni9Ti
GB/T 12230
(GB/T 2100)
LCB, LC1, LC2, LC3
JN/T 7248
OCr18Ni, 1Cr18Ni9
OCr18Ni9Ti, 1Cr18Ni9Ti
GB/T 1220
Stainless acid resistant steel
ZGOCr18Ni, ZG1Cr18Ni9Ti
ZGO0Cr18Ni10, ZG0Cr18Ni12MoTi
CF8, CF8M, CF3, CF3M, CF8C
GB/T 12230
1Cr18Ni9(302), OCr18NI9(304)
1Cr17Ni2(431), OOCr19Ni11(304L)
OCr17Ni12Mo2(316), OOCr17Ni14Mo2(316L)
GB/T 1220
The valve stem
Stainless steel
Chrome steel
1Cr13, 2Cr13, 3Cr13
GB/T 1220
Chromium nickel steel
1Cr17Ni2, 1Cr18Ni9
Inconel titanium steel
1Cr18Ni9Ti
Chromium nickel molybdenum titanium steel
1Cr18Ni12Mo2Ti, 1Cr18Ni12Mo3Ti
Chromium manganese molybdenum nitrogen steel
OCr17Mn13Mo2V
Precipitation hardening type
OCr17Ni4Cu4Mo(17-4PH)
Chrome silicon molybdenum steel
4Cr9Si2, 4Cr10Si2Mo
GB/T 1221
Chromium molybdenum-vanadium steel
25Cr2MoV, 25Cr2Mo1V
GB/T 3077
Nitriding steel
38CrMoAL(318 Steel)
Valve stem nut
Cast aluminium bronze
ZCuA19Mn2, ZCuA19Fe4Ni4Mn2
GB/T 12225(GB/T 1176)
Cast aluminium brass
ZCuA19FeNi4Mn2
Austenitic high nickel spheres
D-2
ASTM-A439
Body or valve seat
Seat, open and close
The sealing surface of the body
Chrome stainless steel
1Cr13, 2Cr13, 2Cr13
GB/T 1220
Stainless acid resistant steel
Bulk material
GB12230(GB2100).GB1220
Cobalt chromium tungsten alloy
D802(S11), D812(S112)
GB/T 984
Spray welding alloy powder
F101, F211, F311, F312, F322
JB/T 3168
Polytetrafluoroethylene
SFB-1, SFB-2, SFB-3
ZB G33 002(HG2-534)
ZB G33 003(HG2-535)
SFBN-1, SFBN-2, SFBN-3
Steel valve main parts material table (2)
Name of Part
material
The name of the
brand
Standard no.
Stud, bolt nut
Quality carbon steel
35A
GB699/GB699
Alloy structural steel/mass carbon steel
35CrMo/35, 35CrMoA/45(B7/2H)
GB3077/GB699
Alloy structural steel
25CrMoVA/35CrMo, 20CrMoV/30CrMo
15CrMo1V/20CrMo(B16/4)
35CrMoA/20CrMo(B77)
GB3077/GB3077
Stainless steel
1Cr17Ni2/2Cr13, OCr18Ni9/OCr18Ni9(B8/8)
OCr17Ni12Mo2/OCr17Ni12Mo2(B8M/8M)
GB1220/GB1220
gasket
Stainless steel tape – asbestos wound gasket
1Cr12/XB450, 1Cr18Ni9/XB450
GB2598/GB3985
Wave shaped pad
08
GB708
Rubber asbestos sheet
XB350, XB450
GB3985
Stainless steel plate
OCR18Ni9, 1Cr18Ni9
OCr18Ni9Ti, 1Cr17Ni13Mo2Ti
GB3280
Pure copper
T2T3
GB2040
Pure aluminium
L2T3
GB3880
Metal ring pad
08 or 10
GB699
OCr13, OCr19Ni9, OCr17Ni12Mo2
GB1220
Teflon board
SFB-1, SFB-2
ZB G33 002
Stainless steel with flexible graphite
(or polytetrafluoroethylene) elastomeric gasket
SH J407
Flexible graphite composite gasket
HG J70
Teflon coated gasket
SHJ402
packing
Flexible graphite packing ring
JN/T6617
Flexible graphite braided packing
RBTNI-450, RBTN2-600
TBTW1-300, RBTW2-450, RBTW2-600
Polytetrafluoroethylene ring braided packing
SFB/260, SFGS/260
SFP/260, SEPS/250
JN/T6626
Teflon ring
SFT-1, SFT-2, SFT-3, SFT-4
HG2-538
The handwheel
Malleable cast iron
KTH330-08, KTH250-10
GB8440
Nodular cast iron
QT400-15, QT450-10
GB12227
Note: 1. Flexible graphite packing ring must be assembled with flexible graphite braided packing.
2. The sealing surface of valve seat and opening and closing parts shall be marked with other non-metallic sealing materials.
Post time: Nov-21-2022
