630 stainless steel is a precipitation hardening, martensitic stainless steel. 630 stainless steel is a precipitation hardening, martensitic stainless steel consisting of copper, niobium / columbium composition. This level has a high strength, hardness (up to 300o C / 572o F) and anti-corrosion properties. After heat treatment, the mechanical properties of the product more perfect, can reach up to 1100-1300 mpa (160-190 ksi) of compressive strength. This level can not be used above 300o C (572o F) or under very low temperatures, its atmosphere and dilute acid or salt has good corrosion resistance, corrosion resistance and its 304 and 430 the same. Applications · offshore platforms, helicopter deck, other platforms · Food Industry · pulp and paper industry · Aerospace (turbine blades) · mechanical parts · nuclear waste barrel Features: 630 stainless steel is a precipitation hardening martensitic stainless steel, and this grade high strength, hardness and corrosion resistance properties. After heat treatment, the mechanical properties of the product more perfect, can reach up to 1100-1300 mpa (160-190 ksi) of compressive strength. This level can not be used above 300 ℃ (570F) or under very low temperatures, its atmosphere and dilute acid or salt has good corrosion resistance, corrosion resistance and its 304 and 430 the same. "Chinese brands 0Cr17Ni4Cu4Nb 05Cr17Ni4Cu4Nb chemical composition: C Si Mn P ≤0.07 ≤1.00 ≤1.00 ≤0.035 S Ni Cr Mo ≤0.030 3.00-5.00 15.5-17.5 - Cu Nb Other 3.00-5.00 0.15-0.45 - US ASTMS17400, AISI630, UNS630 chemical composition C Si Mn P ≤0.07 ≤1.00 ≤1.00 ≤0.040 S Ni Cr Mo ≤0.030 3.00-5.00 15.5-17.5 - Cu Nb Other 3.00-5.00 0.15-0.45 - Japan SUS630 chemical composition C Si Mn P ≤0.07 ≤1.00 ≤1.00 ≤0.040 S Ni Cr Mo ≤0.030 3.00-5.00 15.5-17.5 - Cu Nb + Tao Other 3.00-5.00 0.15-0.45 - Europe X5CrNiCuNb16-4 chemical composition C Si Mn P ≤0.07 ≤1.00 ≤1.00 ≤0.040 S Ni Cr Mo ≤ 0.030 3.00-5.00 15.5-17.5 - Cu Nb + Tao Other 3.00-5.00 0.15-0.45 - Application areas: offshore platforms, helicopter deck, other platforms pulp and paper industry food industry Aerospace (turbine blades) mechanical components of nuclear waste barrel mechanical properties: Tensile strength σb (MPa): 480 ℃ aging, ≥1310; 550 ℃ aging, ≥1060; 580 ℃ aging, ≥1000; 620 ℃ aging, ≥930 Conditions yield strength σ0.2 (MPa): 480 ℃ aging, ≥ 1180; 550 ℃ aging, ≥1000; 580 ℃ aging, ≥865; 620 ℃ aging, ≥725 Elongation δ5 (%): 480 ℃ aging, ≥10; 550 ℃ aging, ≥12; 580 ℃ aging, ≥13 ; 620 ℃ aging, ≥16 section shrinkage ψ (%): 480 ℃ aging, ≥40; 550 ℃ aging, ≥45; 580 ℃ aging, ≥45; 620 ℃ aging, ≥50 Hardness: solution, ≤363HB and ≤38HRC; 480 ℃ aging, ≥375HB and ≥40HRC; 550 ℃ aging, ≥331HB and ≥35HRC; 580 ℃ aging, ≥302HB and ≥31HRC; 620 ℃ aging, ≥277HB and ≥28HRC mechanical properties: 630 stainless steel elongation remained high even higher than many low-alloy steel elongation This is mainly due to its high nitrogen content and other characteristics associated with - high work-hardening rate. So in part by cold forming high strength can be obtained. This can be used include the use of deep wells and pipelines bolts. 630 stainless steel, like ordinary, low-temperature properties of stainless steel 630 is also very good. 630 stainless steel and anti-strike breaking capacity crowd is very high. And only as low as -196 ℃ when only slightly. This shows very good low temperature 630 stainless steel.