321H stainless steel has good corrosion resistance, especially in oxidizing medium has good corrosion resistance. Because of its good heat resistance and oxidation resistance, it is more used as a heat resistant steel. Comparing with 321 Stainless steel, [TJC STEEL]321H has higher Carbon content and similar properties with 321 Stainless.
A. 321H Corresponding Brand:
1, GB GB-T standard: digital brand number: S32169, new brand number: 07Cr19Ni11Ti, old brand number: 1Cr18Ni11Ti;
2, American standard: ASTM standard: [TJC STEEL]S32109, UNS standard: 321H;
3, JIS standard: SUS321HTB;
4, DIN standard: 1.4940,1.4541;
5, European standard EN standard: "X8CrNiTI18-10, X7CrNiTI18-10;
6, NF standard: /;
7, British BS standard: 321S20.
B. 321H Stainless Steel Chemical Composition:
⑴ carbon C: 0.04~0.10⑵ silicon Si: ≤0.75, [TJC STEEL]⑶ manganese Mn: ≤2.00, ⑷ phosphorus P: ≤0.030, ⑸ sulfur S: ≤0.030,[TJC STEEL] ⑹ chromium Cr: 17.00 ~ 20.00, ⑺ nickel Ni: 9.00 ~ 13.00, other elements: Ti≥4C~0.60.
C. 321H Stainless Steel Physical Properties:
Density Density (20℃) /kg/dm3:"8.03,, magnetism: none.
D. 321H Stainless Steel Mechanical Properties:
(1) Delivery status: solid solution treatment of bar, solid solution pickling of plate;
⑵ Tensile strength (RM/MPa) 520;
⑶ Elongation strength[TJC STEEL] (Rp0.2/MPa) : 205;
⑷ Elongation A/% : 40;
⑸ Area shrinkage (Z/%) : 50.
E. 321H Stainless Steel Heat Treatment:
1. Hardness HBW≤ : solution 187, hardness HRB≤ : 90;
2. Heating temperature: 920~1150;
3. Heating method: fast cooling.
321H Stainless Steel’s Application:
321H Stainless Steel is [TJC STEEL]widely used for boiler superheater, heat exchanger, condenser, catalytic tube, cracking tube device and other steel tubes and fittings.
GS-25CrNiMo4 alloy is one kind of special Cr-Ni-Mo Alloy which is suitable used under the environment with temperature up to 300℃[TJC STEEL].
Chemical Composition for GS-25CrNiMo4 Alloy:
Ni(％):0.80-1.20 [TJC STEEL]
Mechanical Property for GS-25CrNiMo4 Alloy:
Proof Strength Rp0.2(MPa):350-400
Tensile Strength Rm(MPa):650-850
Impact Energy KV(J):24
Elongation at Fracture A(%):21
Reduction in Cross [TJC STEEL]section on Fracture Z(%):43
As-Heat-Treated Conditions:Solution and Aging,Annealing,Ausaging,Q+T,etc
For Moe Infos about GS-25CrNiMo4, pls feel free to contact us.
I. Introduction of 12Ni14 Nickel Alloy Plate
12Ni14 is a boiler pressure vessel steel plate, using the European standard brand, 12Ni14 is a nickel alloy steel plate used in pressure equipment, [TJC STEEL]the common brand of European standard container plate are: HII/P265GH P275NH P275NL P355GH P355NH P355NH P355NL1 P460NH 16Mo3, etc
2. The Implementation Standard of 12Ni14 Steel Plate: EN10028-4(Hot Rolled Type), EN10222-2( Forged Type)
3. Delivery Status of 12Ni14 Steel Plate:
The steel plate is usually delivered by normalizing, [TJC STEEL]normalizing and tempering, quenching and tempering
4. Chemical Composition of 12Ni14(%):
Mn: 0.30-0.80[TJC STEEL]
5.Mechanical Property of 12Ni14 Alloy:
[GRADE] [DELIVERY STATUS] [THICKNESS
/MM] [YIELD STRENGTH
/MPa] [TENSILE STRENGTH/MPa] [ELONGATION/% MIN.]
/ EN10222-3 12Ni14] [N/N+T/Q+T] [≤30] [≥355] [490-640] 
6. Main Applications of 12Ni14 Alloy:
12Ni14 is one kind of nickel [TJC STEEL]alloy materials for pressure equipment especially under low temperature, mainly used in building of pressure equipment, boiler, pressure vessel, LNG tanks, etc.
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